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Cruise Control issues [message #107037] Mon, 29 November 2010 12:18 Go to next message
Carl S. is currently offline  Carl S.   United States
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
Senior Member

My original cruise control stopped working and I need some help diagnosing the problem. On our way to the GMCSJ rally in Benson last month, I was cruising down I-10, with the cruise engaged, when my engine died. After getting safely off the road and running through a few diagnostic steps, I determined that I had no spark. I installed the spare ignition module that I carry, the engine started right up, and we were back on the road in less than 15 minutes.

Once I got back up to speed, I hit the cruise control switch and it would not engage. It has been intermittent ever since I bought the coach two and a half years ago, so I didn't think much about it. In Benson, I replaced the ignition module with a new one and, while I was in there, thinking I had inadvertently pulled a wire loose on the cruise control, checked the wiring connections on the cruise unit. I had previously grounded the cruise control directly to the engine, at Ken Burton's suggestion, which had helped with the intermittence problem. All seemed well yet the cruise would not engage on the trip home either.

Before leaving on my annual sand dune trip over Thanksgiving weekend, I re-checked the electrical connections, took the lower dash panel off and checked the switch at the brake pedal (which I assume is some sort of device that temporarily breaks the vacuum to the cruise control when you hit the brake). It looked OK physically, and I adjusted it a little closer to the stop on the pedal arm. I still didn't have any cruise control for the whole trip down there.

On the way home, I stopped in Yuma and checked under the hatch again as well as replaced the fuse (which looked OK, and apparently was). None of this fixed it. I would like to fix this as I want to spend my next set of GMC units on a new final drive with a limited slip differential instead of a Rostra cruise control (I know, there is a huge price difference and I probably should look at the Rostra as a 'nickle and dime' item)

I guess my next step is to look in the repair manual, but I thought I would bring this up here first.Thanks for any help you guys can give me on this one.


Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
Re: [GMCnet] Cruise Control issues [message #107042 is a reply to message #107037] Mon, 29 November 2010 12:39 Go to previous messageGo to next message
jimk is currently offline  jimk   United States
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
Senior Member
Does the green light come on?
We can let you try a rebuilt unit ans see if it will help.
Since your going to be purchasing things from us anyway, we will not
charge you for it .
Hell of a deal.

On Mon, Nov 29, 2010 at 10:18 AM, Carl Stouffer <carljr3b@yahoo.com> wrote:
>
>
> My original cruise control stopped working and I need some help diagnosing the problem.  On our way to the GMCSJ rally in Benson last month, I was cruising down I-10, with the cruise engaged, when my engine died.  After getting safely off the road and running through a few diagnostic steps, I determined that I had no spark.  I installed the spare ignition module that I carry, the engine started right up, and we were back on the road in less than 15 minutes.
>
> Once I got back up to speed, I hit the cruise control switch and it would not engage.  It has been intermittent ever since I bought the coach two and a half years ago, so I didn't think much about it.  In Benson, I replaced the ignition module with a new one and, while I was in there, thinking I had inadvertently pulled a wire loose on the cruise control, checked the wiring connections on the cruise unit.  I had previously grounded the cruise control directly to the engine, at Ken Burton's suggestion, which had helped with the intermittence problem.  All seemed well yet the cruise would not engage on the trip home either.
>
> Before leaving on my annual sand dune trip over Thanksgiving weekend, I re-checked the electrical connections, took the lower dash panel off and checked the switch at the brake pedal (which I assume is some sort of device that temporarily breaks the vacuum to the cruise control when you hit the brake).  It looked OK physically, and I adjusted it a little closer to the stop on the pedal arm.  I still didn't have any cruise control for the whole trip down there.
>
> On the way home, I stopped in Yuma and checked under the hatch again as well as replaced the fuse (which looked OK, and apparently was).  None of this fixed it.  I would like to fix this as I want to spend my next set of GMC units on a new final drive with a limited slip differential instead of a Rostra cruise control (I know, there is a huge price difference and I probably should look at the Rostra as a 'nickle and dime' item)
>
> I guess my next step is to look in the repair manual, but I thought I would bring this up here first.Thanks for any help you guys can give me on this one.
> --
> Carl S.
> '75 ex Palm Beach
> Tucson, AZ.
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
Re: [GMCnet] Cruise Control issues [message #107044 is a reply to message #107037] Mon, 29 November 2010 12:47 Go to previous messageGo to next message
Bob Maxwell+   United States
Messages: 75
Registered: November 2010
Location: Belén, New Mexico
Karma: 0
Member
> I guess my next step is to look in the repair manual, but I thought I
would bring this up here first.<

That's the right order. "I'm a man. I can figure it out. I can change. if I
have to." And I might then read a manual. :-)

Adiós. . .

Bob Maxwell†

Belén NM

Life's journey is not to arrive at the grave safely in a well preserved
body, but rather to skid in sideways, totally worn out, shouting "...Thank
you Jesus ...what a ride!"


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Re: Cruise Control issues [message #107045 is a reply to message #107037] Mon, 29 November 2010 12:52 Go to previous messageGo to next message
wally is currently offline  wally   United States
Messages: 643
Registered: August 2004
Location: Omaha Nebraska
Karma: 5
Senior Member
Carl S. wrote on Mon, 29 November 2010 12:18

My original cruise control stopped working and I need some help diagnosing the problem. On our way to the GMCSJ rally in Benson last month, I was cruising down I-10, with the cruise engaged, when my engine died. After getting safely off the road and running through a few diagnostic steps, I determined that I had no spark. I installed the spare ignition module that I carry, the engine started right up, and we were back on the road in less than 15 minutes.

Once I got back up to speed, I hit the cruise control switch and it would not engage. It has been intermittent ever since I bought the coach two and a half years ago, so I didn't think much about it. In Benson, I replaced the ignition module with a new one and, while I was in there, thinking I had inadvertently pulled a wire loose on the cruise control, checked the wiring connections on the cruise unit. I had previously grounded the cruise control directly to the engine, at Ken Burton's suggestion, which had helped with the intermittence problem. All seemed well yet the cruise would not engage on the trip home either.

Before leaving on my annual sand dune trip over Thanksgiving weekend, I re-checked the electrical connections, took the lower dash panel off and checked the switch at the brake pedal (which I assume is some sort of device that temporarily breaks the vacuum to the cruise control when you hit the brake). It looked OK physically, and I adjusted it a little closer to the stop on the pedal arm. I still didn't have any cruise control for the whole trip down there.

On the way home, I stopped in Yuma and checked under the hatch again as well as replaced the fuse (which looked OK, and apparently was). None of this fixed it. I would like to fix this as I want to spend my next set of GMC units on a new final drive with a limited slip differential instead of a Rostra cruise control (I know, there is a huge price difference and I probably should look at the Rostra as a 'nickle and dime' item)

I guess my next step is to look in the repair manual, but I thought I would bring this up here first.Thanks for any help you guys can give me on this one.

Carl, You might try squirting contact cleaner in the gap around the engage button and exercising the button a bunch of times. Doing that got ours going again a while back. Worth a try probably.
HTH


Wally Anderson
Omaha NE
75 Glenbrook
Re: [GMCnet] Cruise Control issues [message #107046 is a reply to message #107042] Mon, 29 November 2010 13:01 Go to previous messageGo to next message
Carl S. is currently offline  Carl S.   United States
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
Senior Member

[quote title=jimk wrote on Mon, 29 November 2010 11:39]Does the green light come on?
We can let you try a rebuilt unit ans see if it will help.
Since your going to be purchasing things from us anyway, we will not
charge you for it .
Hell of a deal.

All right Jim,

That sounds like too good of a deal to pass up. I am going to call you sometime this week to discuss the final drive. We'll talk about this then.


Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
Re: Cruise Control issues [message #107047 is a reply to message #107037] Mon, 29 November 2010 13:11 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
Senior Member
Where in the world would a GMCer find such a deal? Dang, that is a sweet offer. I know that Carl is a very loyal customer to our suppliers, and a good friend to Teri and me. Let us know what you find Carl.
Dan


3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer
Re: [GMCnet] Cruise Control issues [message #107052 is a reply to message #107045] Mon, 29 November 2010 13:35 Go to previous messageGo to next message
emerystora is currently offline  emerystora   United States
Messages: 4442
Registered: January 2004
Karma: 13
Senior Member
There is an in-line fuse in a wire for the cruise control. On mine it
had dropped down beneath the dash so it was hard to see.

Did you check that fuse?


Emery Stora

On Nov 29, 2010, at 11:52 AM, Wally Anderson <wallyand@aim.com> wrote:

>
>
> Carl S. wrote on Mon, 29 November 2010 12:18
>> My original cruise control stopped working and I need some help
>> diagnosing the problem. On our way to the GMCSJ rally in Benson
>> last month, I was cruising down I-10, with the cruise engaged, when
>> my engine died. After getting safely off the road and running
>> through a few diagnostic steps, I determined that I had no spark.
>> I installed the spare ignition module that I carry, the engine
>> started right up, and we were back on the road in less than 15
>> minutes.
>>
>> Once I got back up to speed, I hit the cruise control switch and it
>> would not engage. It has been intermittent ever since I bought the
>> coach two and a half years ago, so I didn't think much about it.
>> In Benson, I replaced the ignition module with a new one and, while
>> I was in there, thinking I had inadvertently pulled a wire loose on
>> the cruise control, checked the wiring connections on the cruise
>> unit. I had previously grounded the cruise control directly to the
>> engine, at Ken Burton's suggestion, which had helped with the
>> intermittence problem. All seemed well yet the cruise would not
>> engage on the trip home either.
>>
>> Before leaving on my annual sand dune trip over Thanksgiving
>> weekend, I re-checked the electrical connections, took the lower
>> dash panel off and checked the switch at the brake pedal (which I
>> assume is some sort of device that temporarily breaks the vacuum to
>> the cruise control when you hit the brake). It looked OK
>> physically, and I adjusted it a little closer to the stop on the
>> pedal arm. I still didn't have any cruise control for the whole
>> trip down there.
>>
>> On the way home, I stopped in Yuma and checked under the hatch
>> again as well as replaced the fuse (which looked OK, and apparently
>> was). None of this fixed it. I would like to fix this as I want
>> to spend my next set of GMC units on a new final drive with a
>> limited slip differential instead of a Rostra cruise control (I
>> know, there is a huge price difference and I probably should look
>> at the Rostra as a 'nickle and dime' item)
>>
>> I guess my next step is to look in the repair manual, but I thought
>> I would bring this up here first.Thanks for any help you guys can
>> give me on this one.
>
> Carl, You might try squirting contact cleaner in the gap around the
> engage button and exercising the button a bunch of times. Doing that
> got ours going again a while back. Worth a try probably.
> HTH
> --
> Wally Anderson
> 1975 Glenbrook
> Megasquirt 455 port injection science project-On the road 8162 miles
> Omaha Nebraska
> Greater Midwest Classics
> GMCES
> http://wallyandsue.blogspot.com/
> _______________________________________________
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> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Re: [GMCnet] Cruise Control issues [message #107053 is a reply to message #107052] Mon, 29 November 2010 13:47 Go to previous messageGo to next message
Carl S. is currently offline  Carl S.   United States
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
Senior Member

emerystora wrote on Mon, 29 November 2010 12:35

There is an in-line fuse in a wire for the cruise control. On mine it
had dropped down beneath the dash so it was hard to see.

Did you check that fuse?


Emery Stora

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Emery, no, I did not see an in line fuse. I will look for that before I take any more drastic steps. Thanks.

And, yes Bob, I think I am doing it in the right order. I didn't even think of looking in the manual until the (almost) last thing.


Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
Re: [GMCnet] Cruise Control issues [message #107088 is a reply to message #107037] Mon, 29 November 2010 22:19 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
Messages: 2446
Registered: January 2004
Karma: 5
Senior Member
Same thing happened to me and I drove all the way back from Florida
with cruise. Bummer! Turned out to be the hose that connected to the
cruise control was not all the on. Looked like is was but it wasn't.
Look for the simple stuff first before tearing everything apart. I
had done some work on the ignition and distributer and had caused the
line to come loose.

J.R. Wright
On Nov 29, 2010, at 1:18 PM, Carl Stouffer wrote:

>
>
> My original cruise control stopped working and I need some help
> diagnosing the problem. On our way to the GMCSJ rally in Benson
> last month, I was cruising down I-10, with the cruise engaged, when
> my engine died. After getting safely off the road and running
> through a few diagnostic steps, I determined that I had no spark. I
> installed the spare ignition module that I carry, the engine started
> right up, and we were back on the road in less than 15 minutes.
>
> Once I got back up to speed, I hit the cruise control switch and it
> would not engage. It has been intermittent ever since I bought the
> coach two and a half years ago, so I didn't think much about it. In
> Benson, I replaced the ignition module with a new one and, while I
> was in there, thinking I had inadvertently pulled a wire loose on
> the cruise control, checked the wiring connections on the cruise
> unit. I had previously grounded the cruise control directly to the
> engine, at Ken Burton's suggestion, which had helped with the
> intermittence problem. All seemed well yet the cruise would not
> engage on the trip home either.
>
> Before leaving on my annual sand dune trip over Thanksgiving
> weekend, I re-checked the electrical connections, took the lower
> dash panel off and checked the switch at the brake pedal (which I
> assume is some sort of device that temporarily breaks the vacuum to
> the cruise control when you hit the brake). It looked OK
> physically, and I adjusted it a little closer to the stop on the
> pedal arm. I still didn't have any cruise control for the whole
> trip down there.
>
> On the way home, I stopped in Yuma and checked under the hatch again
> as well as replaced the fuse (which looked OK, and apparently was).
> None of this fixed it. I would like to fix this as I want to spend
> my next set of GMC units on a new final drive with a limited slip
> differential instead of a Rostra cruise control (I know, there is a
> huge price difference and I probably should look at the Rostra as a
> 'nickle and dime' item)
>
> I guess my next step is to look in the repair manual, but I thought
> I would bring this up here first.Thanks for any help you guys can
> give me on this one.
> --
> Carl S.
> '75 ex Palm Beach
> Tucson, AZ.
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

_______________________________________________
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
Re: Cruise Control issues [message #107099 is a reply to message #107037] Tue, 30 November 2010 01:38 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
The Cruise control is one of the few things in the GMC gets power from one of the two electrical systems (house vs. Engine) and it ground to the opposite system. This happens because the CC was mounted and grounded to the body but is powered by the engine electrical system. I have fixed three of these intermittent CCs by removing the ground wire from the body where it is mounted and attaching it to the back of the engine.

This may not be your problem but it will only take a few minutes to add a piece of wire to the existing ground lead and attach it to one of the open bolts holes on the back of the head.

Do NOT attach the ground of the CC to both the body and the engine at the same time.

If this does not fix it, I would start looking for disconnected or cracked hoses.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: Cruise Control issues [message #107140 is a reply to message #107099] Tue, 30 November 2010 11:50 Go to previous messageGo to next message
Carl S. is currently offline  Carl S.   United States
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
Senior Member

Ken Burton wrote on Tue, 30 November 2010 00:38

The Cruise control is one of the few things in the GMC gets power from one of the two electrical systems (house vs. Engine) and it ground to the opposite system. This happens because the CC was mounted and grounded to the body but is powered by the engine electrical system. I have fixed three of these intermittent CCs by removing the ground wire from the body where it is mounted and attaching it to the back of the engine.

This may not be your problem but it will only take a few minutes to add a piece of wire to the existing ground lead and attach it to one of the open bolts holes on the back of the head.

Do NOT attach the ground of the CC to both the body and the engine at the same time.

If this does not fix it, I would start looking for disconnected or cracked hoses.



Thanks Ken,

I moved the ground from the body to the back of the engine last year at Quartzsite, at your suggestion. It DID seem to help with the problems I had been experiencing up to that point. I will go back in there and take a closer look at the hoses. Although I have already checked them, it does make sense that I may have jostled the hose connections when I was changing out the ignition module. If that doesn't show any promise of a solution, I will test the brake-disconnect switch using the procedure outlined in the service manual. I would like to exhaust the other possibilities before I take advantage of Jim K.'s generous offer of a rebuilt transducer.

Our next scheduled trip is a short one, less than 50 miles to the GMCSJ rally in Amado. If I don't have CC for that one, it will not be the end of the world. Sure would have been nice to have it on last weekend's 530 mile trip to the dunes!


Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
Re: Cruise Control issues [message #107141 is a reply to message #107140] Tue, 30 November 2010 12:04 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
Senior Member
Carl, save this chore. Ken and I will fix it for you at Quartzsite. Laughing
Dan


3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer
Re: Cruise Control issues [message #107142 is a reply to message #107141] Tue, 30 November 2010 12:12 Go to previous messageGo to next message
Carl S. is currently offline  Carl S.   United States
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
Senior Member

WD0AFQ wrote on Tue, 30 November 2010 11:04

Carl, save this chore. Ken and I will fix it for you at Quartzsite. Laughing
Dan


Laughing OK, or you and Ken can watch while I do it! Laughing


Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
Re: Cruise Control issues [message #107205 is a reply to message #107142] Tue, 30 November 2010 23:32 Go to previous messageGo to next message
ggroth is currently offline  ggroth   United States
Messages: 282
Registered: February 2004
Location: Carson City NV
Karma: 0
Senior Member

I also cured an intermittent OEM cruise control by running a wire from the body of the cruise control to the ground strap on the coil. (and thence to the block)

geo groth '73 260 Sequoia Carson City Nevada 89703
Re: Cruise Control issues [message #107208 is a reply to message #107140] Wed, 01 December 2010 00:36 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
Carl S. wrote on Tue, 30 November 2010 11:50

Ken Burton wrote on Tue, 30 November 2010 00:38

The Cruise control is one of the few things in the GMC gets power from one of the two electrical systems (house vs. Engine) and it ground to the opposite system. This happens because the CC was mounted and grounded to the body but is powered by the engine electrical system. I have fixed three of these intermittent CCs by removing the ground wire from the body where it is mounted and attaching it to the back of the engine.

This may not be your problem but it will only take a few minutes to add a piece of wire to the existing ground lead and attach it to one of the open bolts holes on the back of the head.

Do NOT attach the ground of the CC to both the body and the engine at the same time.

If this does not fix it, I would start looking for disconnected or cracked hoses.



Thanks Ken,

I moved the ground from the body to the back of the engine last year at Quartzsite, at your suggestion. It DID seem to help with the problems I had been experiencing up to that point. I will go back in there and take a closer look at the hoses. Although I have already checked them, it does make sense that I may have jostled the hose connections when I was changing out the ignition module. If that doesn't show any promise of a solution, I will test the brake-disconnect switch using the procedure outlined in the service manual. I would like to exhaust the other possibilities before I take advantage of Jim K.'s generous offer of a rebuilt transducer.

Our next scheduled trip is a short one, less than 50 miles to the GMCSJ rally in Amado. If I don't have CC for that one, it will not be the end of the world. Sure would have been nice to have it on last weekend's 530 mile trip to the dunes!


Sorry Carl. I did not pay attention to who it was that started this thread. I knew you had already fixed the CC ground issue earlier but I did not notice that it was you who started this thread.

Ken


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: Cruise Control issues [message #107228 is a reply to message #107208] Wed, 01 December 2010 09:35 Go to previous messageGo to next message
Carl S. is currently offline  Carl S.   United States
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
Senior Member

Sorry Carl. I did not pay attention to who it was that started this thread. I knew you had already fixed the CC ground issue earlier but I did not notice that it was you who started this thread.

Ken [/quote]

No prob Ken, I'm sure the repeat info will benefit someone else.


Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
Re: Cruise Control issues [message #107344 is a reply to message #107228] Thu, 02 December 2010 20:28 Go to previous messageGo to next message
Carl S. is currently offline  Carl S.   United States
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
Senior Member

I was out cleaning the inside of the coach this afternoon after work, and I decided to take a closer look at the cruise control. I checked the vacuum lines and they were all tight with no sign of any leaks. On a whim, I got out my Mighty-vac pump and checked the servo. It would not pump up a vacuum and I could hear air going through the diaphragm somewhere. I called Number One Parts Vendor (Jim K at Applied GMC) to see if this part is still available. Jim told me, to the best of his knowledge, it is not. However, he has a few good used ones and is sending one to me at NO CHARGE. Thank you Jim. Hopefully that will solve my problem.

I also talked to Jim about ordering a 3.70 posi final drive. We agreed that it was the way to go, especially since I am running those 255/70R-16 tires. I generally don't drive much over 65 anyway, so I'm not worried about the gearing being too low. I used to have a Dodge 1-ton (1980, pre-overdrive tranny) with 4.56 rear end gears and it was fine. Jim will ship the new final drive to me the first of the year (to let my bank account recover from Christmas). Hopefully I'll have it installed by the end of January for our Quartzsite trip.

The moral of the story is; support our vendors and they will support you.


Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
Re: Cruise Control issues [message #107349 is a reply to message #107344] Thu, 02 December 2010 22:44 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
Messages: 7111
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Location: Dexter, Mo.
Karma: 207
Senior Member
Great idea Carl. Bring the final drive to Quartzsite so Ken and I can install it for you. Laughing
Dan


3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer
Re: [GMCnet] Cruise Control issues [message #107364 is a reply to message #107044] Fri, 03 December 2010 07:28 Go to previous messageGo to next message
Hardie Johnson is currently offline  Hardie Johnson   United States
Messages: 483
Registered: January 2004
Location: Raleigh NC
Karma: 0
Senior Member
bmaxwell wrote on Mon, 29 November 2010 13:47

> I guess my next step is to look in the repair manual, but I thought I
would bring this up here first.<
That's the right order. "I'm a man. I can figure it out. I can change. if I have to." And I might then read a manual. Smile
<>

You left out the last phrase, "I guess."
"Quando Omni Flunkus Moritati"


Hardie Johnson "Crashj"
1973 26 foot Glacier, White Thing
Raleigh NC
Re: Cruise Control issues [message #107376 is a reply to message #107349] Fri, 03 December 2010 09:08 Go to previous messageGo to previous message
Carl S. is currently offline  Carl S.   United States
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
Senior Member

WD0AFQ wrote on Thu, 02 December 2010 21:44

Great idea Carl. Bring the final drive to Quartzsite so Ken and I can install it for you. Laughing
Dan


Sure Dan. Would you guys really do that??? Very Happy I'm hoping to have it installed by then.

Actually I'm thinking I might bring the old one with me and give it to Jim K. and save the return shipping.


Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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