Home » Public Forums » GMCnet » OEM Cruise control
| OEM Cruise control [message #148169] |
Sat, 29 October 2011 20:15  |
rickmike
Messages: 252
Registered: September 2011
Location: United States
Karma: 0
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My cruise control won't engage.
Any works of wisdom?
Previous Owner mentioned a grounding problem may be the cause.
If it is, to what do I add a new ground wire?
Any other ideas?
rick
1974 26' Canyonlands
aka "The General"
Clinton, TN
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| Re: OEM Cruise control [message #148171 is a reply to message #148169] |
Sat, 29 October 2011 20:22  |
jtblank
Messages: 237
Registered: June 2007
Location: Tulare, CA
Karma: 1
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Possible bad transducer, my OEM works great till it really gets hot and then no green light... nothing. I can drive for hours in cool weather but once it gets warm, after about 45 minutes it's out. Once I get somewhere and let is sit for hours then it will work again till it gets hot again. I imagine that some of the internal electronics are heat sensitive. It's not high on my to do list, but when I get there either new transducer or upgrade to a Rostra.
John Blankenship
'76 Palm Beach
Tulare, CA
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| Re: OEM Cruise control [message #148173 is a reply to message #148169] |
Sat, 29 October 2011 20:27 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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| rickmike wrote on Sat, 29 October 2011 20:15 |
My cruise control won't engage.
Any works of wisdom?
Previous Owner mentioned a grounding problem may be the cause.
If it is, to what do I add a new ground wire?
Any other ideas?
rick
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I believe (based on looking at my empty engine bay) that there is a ground wire that needs to go between the engine and the cruise transducer. If this is missing it could be the grounding problem mentioned noted by the PO.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: OEM Cruise control [message #148174 is a reply to message #148169] |
Sat, 29 October 2011 20:29 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Disconnect the ground wire from the CC unit to the body and run it to a bolt on the back of the engine. There are a couple of unused bolt holes on the back of the heads that will work for this. Do not use a valve cover bolt as it will eventually make a bad connection.
Do NOT just add a ground wire to the engine. The existing ground wire to the body needs to be removed. If you do not remove it, one day you may just find it burned to a crisp.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: OEM Cruise control [message #148183 is a reply to message #148169] |
Sat, 29 October 2011 21:46 |
spiffycar
Messages: 133
Registered: May 2010
Location: Brook Park ,Ohio
Karma: 1
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| rickmike wrote on Sat, 29 October 2011 21:15 |
My cruise control won't engage.
Any works of wisdom?
Previous Owner mentioned a grounding problem may be the cause.
If it is, to what do I add a new ground wire?
Any other ideas?
rick
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Ok folks,Deja'vu time,,,
Any works of wisdom?.....
Take it out,set it on a concrete floor and hit it with a hammer till its flat! 
Any other ideas?.....
Upgrade to a more modern (read = better) Cruise control system.
Paul W L
76 Daytona Beach! ( EX-Palm Beach )
Cleveland,OH
& Current Card Carrying Pull A Part VIP Member
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| Re: [GMCnet] OEM Cruise control [message #148184 is a reply to message #148183] |
Sat, 29 October 2011 22:11 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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We have supplied rebuilt units and they seem to solve problems, always
check the ground .
On Sat, Oct 29, 2011 at 7:46 PM, Paul W Lehmann <spiffycar@gmail.com> wrote:
>
>
> rickmike wrote on Sat, 29 October 2011 21:15
>> My cruise control won't engage.
>>
>> Any works of wisdom?
>>
>> Previous Owner mentioned a grounding problem may be the cause.
>>
>> If it is, to what do I add a new ground wire?
>>
>> Any other ideas?
>>
>> rick
>
>
> Ok folks,Deja'vu time,,,
>
> Any works of wisdom?.....
>
> Take it out,set it on a concrete floor and hit it with a hammer till its flat! :lol:
>
> Any other ideas?.....
>
> Upgrade to a more modern (read = better) Cruise control system.
> --
> Paul W L
> 76 Palm Beach
> Cleveland,OH
>
> & Current Pull A Part VIP Member
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List 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
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| Re: OEM Cruise control [message #148188 is a reply to message #148169] |
Sat, 29 October 2011 23:53 |
captjack
Messages: 271
Registered: February 2010
Location: Sebastopol, California
Karma: 1
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Senior Member |
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Apart from the grounding issue which was well covered above, there exists a manual for the cruise control. I have a copy but can't figure out where I downloaded it from. It does have a troubleshooting section which I used to find and fix a problem with my original system. Hopefully someone else can refer you to the right link.
My transducer unit failed recently. The bushing between the magnet disk and the copper disk failed and the magnet disk started dragging on the copper disk. I've installed a new factory rebuilt unit I got from Jim K, but haven't done a drive test yet to check it out.
Jack Christensen - K6ROW,
'76 Glenbrook/Clasco - "The Silver Bullet",
Sebastopol, CA
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| Re: OEM Cruise control [message #148191 is a reply to message #148188] |
Sun, 30 October 2011 04:06 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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| captjack wrote on Sat, 29 October 2011 21:53 |
... there exists a manual for the [oem] cruise control. I have a copy but can't figure out where I downloaded it from. It does have a troubleshooting section which I used to find and fix a problem with my original system. Hopefully someone else can refer you to the right link. ...
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I do not see it on BDub's website:
<http://www.bdub.net/manuals/index.html>
Double check. If it isn't there, it would be a good idea to send BDub a copy so we can all have access.
Thanks in advance....
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: OEM Cruise control [message #148197 is a reply to message #148169] |
Sun, 30 October 2011 08:07 |
LNelson
Messages: 335
Registered: December 2008
Location: Springfield, MO
Karma: 0
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Senior Member |
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I, too, need to troubleshoot my cruise control. I bought my coach with that feature INOP.
That's okay, haven't had a cruise control for years...the bus did not have one, as far as that goes, my ol' Cessna 195 does NOT have an autopilot at all and the Twinkie's unit needs repairs.
I will just have to "hand fly" all three for now. BUT...I would like to see that troubleshooting manual someone mentioned. This thread has helped a lot, however.
Larry Nelson Springfield, MO
Ex GMC'er, then GM Busnut
now '77 Eleganza ARS WB0JOT
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| Re: [GMCnet] OEM Cruise control [message #148199 is a reply to message #148183] |
Sun, 30 October 2011 09:37 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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PO had Sirum install a rebuilt transducer, works flawlessly. I reinforced the chain clip, a common failure point. I see no need to upgrade.
--johnny
________________________________
From: Paul W Lehmann <spiffycar@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Saturday, October 29, 2011 10:46 PM
Subject: Re: [GMCnet] OEM Cruise control
rickmike wrote on Sat, 29 October 2011 21:15
> My cruise control won't engage.
>
> Any works of wisdom?
>
> Previous Owner mentioned a grounding problem may be the cause.
>
> If it is, to what do I add a new ground wire?
>
> Any other ideas?
>
> rick
Ok folks,Deja'vu time,,,
Any works of wisdom?.....
Take it out,set it on a concrete floor and hit it with a hammer till its flat! :lol:
Any other ideas?.....
Upgrade to a more modern (read = better) Cruise control system.
--
Paul W L
76 Palm Beach
Cleveland,OH
& Current Pull A Part VIP Member
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GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: OEM Cruise control [message #148210 is a reply to message #148197] |
Sun, 30 October 2011 12:54 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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| LNelson wrote on Sun, 30 October 2011 06:07 |
...
That's okay, haven't had a cruise control for years...the bus did not have one, ...
|
Seems the GM electric CC (Delphi Electro-Motor Cruise System) is being adapted to bus type motorhomes:
<http://barthmobile.com/eve/forums/a/tpc/f/3431087061/m/2531081172>
Here is a Delphi Brochure on it:
<http://www.horizonindustries.com/info/Cruise.pdf>
I have collected a few to "play with"... no success yet.
If you pick up a GM/Delphi cruise make sure it DOES NOT use pin H. (Cruise Control Inhibit) This signal comes from the engine computer and is hard to "fake." It is easier to get one the MODULE from a pick-up or an earlier car, that DOESN'T have a wire in pin H. But you want a wire in pin G. You can mix and match plugs from other cars/trucks to get enough pins for the connections you need... you might need to swap a few pins in the plug.
I am thinking I can modify some of the ones I have (that expect an inhibit input) into electric towd brake... kind of like Ken H's $10 towd brake. But I'll get the cruise to work first.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: OEM Cruise control [message #148212 is a reply to message #148210] |
Sun, 30 October 2011 13:14 |
rvanwin
Messages: 325
Registered: April 2007
Location: Battlefield, MO
Karma: 6
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| Mike Miller wrote on Sun, 30 October 2011 12:54 |
I have collected a few to "play with"... no success yet.
If you pick up a GM/Delphi cruise make sure it DOES NOT use pin H. (Cruise Control Inhibit) This signal comes from the engine computer and is hard to "fake." It is easier to get one the MODULE from a pick-up or an earlier car, that DOESN'T have a wire in pin H. But you want a wire in pin G. You can mix and match plugs from other cars/trucks to get enough pins for the connections you need... you might need to swap a few pins in the plug.
I am thinking I can modify some of the ones I have (that expect an inhibit input) into electric towd brake... kind of like Ken H's $10 towd brake. But I'll get the cruise to work first.
|
John Sharp did a nice photo write up of how to install the Delphi unit. The ones from a '89 - '90 pickup has the cable that works quite well with little modification.
<http://www.gmcmhphotos.com/photos/showphoto.php?photo=21936&title=1&cat=4776>
or <http://tinyurl.com/4y9g24r>
I have installed a couple and the install is fairly straightforward.
Randy & Margie
'77 Eleganza II '403'
Battlefield, MO
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| Re: OEM Cruise control [message #148216 is a reply to message #148212] |
Sun, 30 October 2011 13:47 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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Yes. It is a good write-up. The pick-up unit he used is the type that does not use pin H, but are a little harder to find... there are more cars in the junk-yards.
The speed sensor used in John's write-up is "a bit" pricey. "spiffycar" (Paul W L) has a cheaper more "all GM" method using a "4 out buffer" and a GM speed senor:
<http://www.gmcmhphotos.com/photos/showgallery.php?cat=5553>
I have collected the parts and wired up a test bench to check the parts before installing. (Using a drill to turn the speed sensor.) I just have not gotten it to work as expected. Checking the parts makes sense... I have a few of each of the needed parts.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] OEM Cruise control [message #148217 is a reply to message #148210] |
Sun, 30 October 2011 13:49 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Mike,
John never mentioned to me the inhibit line causing him any problem, and it
certainly didn't when I installed my Electromotor II:
http://www.gmcmhphotos.com/photos/data/4763/CC_Wiring_Diagram_--_KH_Mod.pdf
John hadn't published how to modify a column control switch when I did
mine, and I STILL haven't gotten around to upgrading to a later switch.
But I'm very happy with my simple control method: A two channel remote
control off of eBay. The transmitter is mounted on the spoke of my
steering wheel with double-sided foam tape. The receiver is beneath the
dash to receive the wires for the Set/Coast and Increase/Resume functions.
I haven't had to change the transmitter battery during the two+ years it's
been installed.
http://www.lightobject.com/2ch-RF-Remote-Control-1527-TxRx-Set-C2-P108.aspx
My remote is different than that shown; several designs are available.
$13 for the CC and $12.95 for the Tx/Rx, plus $70 or so for a new VSS (from
'Druber) made for a cheap upgrade. Someone's since found some GM VSS's
that would work for cheep.
I hadn't thought about using one for a toad brake. Maybe so...have to
figure out how to translate velocity to deceleration rate...
Ken H.
On Sun, Oct 30, 2011 at 1:54 PM, Mike Miller <m000035@gmail.com> wrote:
>
> ...
> If you pick up a GM/Delphi cruise make sure it DOES NOT use pin H. (Cruise
> Control Inhibit) This signal comes from the engine computer and is hard to
> "fake." It is easier to get one the MODULE from a pick-up or an earlier
> car, that DOESN'T have a wire in pin H. But you want a wire in pin G. You
> can mix and match plugs from other cars/trucks to get enough pins for the
> connections you need... you might need to swap a few pins in the plug.
>
> I am thinking I can modify some of the ones I have (that expect an inhibit
> input) into electric towd brake... kind of like Ken H's $10 towd brake.
> But I'll get the cruise to work first.
> --
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] OEM Cruise control [message #148219 is a reply to message #148217] |
Sun, 30 October 2011 14:38 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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| Ken Henderson wrote on Sun, 30 October 2011 11:49 |
...
But I'm very happy with my simple control method: A two channel remote
control off of eBay. The transmitter is mounted on the spoke of my
steering wheel with double-sided foam tape. The receiver is beneath the
dash to receive the wires for the Set/Coast and Increase/Resume functions. ...
...
I hadn't thought about using one for a toad brake. Maybe so...have to figure out how to translate velocity to deceleration rate...
|
I have a four channel remote from Dino-direct. I am going to use three for the cc (set, accel and a "disengage"-- hooked to the brake line.) I haven't thought of what to use the fourth button for... maybe a secondary horn.
Towd brake:
From my reading: If you separate the CC module in half, the mechanical side is driven by two power transistors. Pretty much "more" or "less" pull on the cable. It even has a feed back loop. I do not know how much power it has to pull but it seems this could be used to pull the brake petal as easily as it pulls on the gas petal. (Might need to provide some kind of vacuum pump.)
The only other thing needed is to figure out how to interface with a standard electric trailer brake controller.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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