| Air Bag Odor [message #172601] |
Fri, 08 June 2012 15:26  |
bwevers
Messages: 597
Registered: October 2010
Location: San Jose
Karma: 5
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Senior Member |
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There's a putrid odor in my 1975 GMC.
I thought there was rotten food under the dinette.
Then I discovered that it emerges from under the dash
when lower the rear suspension. It's coming from
the Power Level valves.
Has anyone had this problem?
Is there a filter I can put on it?
Thanks,
Bill
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose
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| Re: [GMCnet] Air Bag Odor [message #172604 is a reply to message #172601] |
Fri, 08 June 2012 15:32  |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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Maybe a dead mouse in the dashboard or the heater box and when the valves
vent it blows it around inside ??? Try running the heat and see if it
smells. Mice and rats love heater boxes.
Sully
77 Royale
On Fri, Jun 8, 2012 at 1:26 PM, Bill Wevers <gmc1975@att.net> wrote:
>
>
> There's a putrid odor in my 1975 GMC.
> I thought there was rotten food under the dinette.
> Then I discovered that it emerges from under the dash
> when lower the rear suspension. It's coming from
> the Power Level valves.
>
> Has anyone had this problem?
> Is there a filter I can put on it?
>
> Thanks,
> Bill
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: Air Bag Odor [message #172605 is a reply to message #172601] |
Fri, 08 June 2012 15:43 |
bwevers
Messages: 597
Registered: October 2010
Location: San Jose
Karma: 5
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Senior Member |
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I'll look under the dash next....
Yesterday I took apart the heater box, but found no animals.
I
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose
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| Re: Air Bag Odor [message #172606 is a reply to message #172601] |
Fri, 08 June 2012 15:46 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Senior Member |
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Bill,
Does your air system have a holding tank? (my 73 has a tank under the battery tray) If it has one -- perhaps you might drain it -- old condensed water may have a smell..
Dennis
| bwevers wrote on Fri, 08 June 2012 15:26 |
There's a putrid odor in my 1975 GMC.
I thought there was rotten food under the dinette.
Then I discovered that it emerges from under the dash
when lower the rear suspension. It's coming from
the Power Level valves.
Has anyone had this problem?
Is there a filter I can put on it?
Thanks,
Bill
|
Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: Air Bag Odor [message #172611 is a reply to message #172601] |
Fri, 08 June 2012 16:12 |
bwevers
Messages: 597
Registered: October 2010
Location: San Jose
Karma: 5
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Senior Member |
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Dennis,
My Glenbook has an air tank on the drivers side.
I'll drain it and see what's inside.
Thanks,
Bill
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose
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| Re: [GMCnet] Air Bag Odor [message #172640 is a reply to message #172605] |
Fri, 08 June 2012 18:17 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Bill,
When you took the heater box apart, did you also remove the evaporator? If
not, you missed a very common debris/critter location -- the back side of
that device. It's not a trivial job to remove it, so you may want to
remove the resistor pack at the driver's side of the box and look in there
-- with a light & mirror or a bore scope. Vacuuming MIGHT work to clean
the area partially.
There are other, even less accessible locations in the HVAC box, so don't
be too quick to dismiss that possiblity.
Ken H.
On Fri, Jun 8, 2012 at 4:43 PM, Bill Wevers wrote:
>
>
> I'll look under the dash next....
> Yesterday I took apart the heater box, but found no animals.
>
>
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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: Air Bag Odor [message #172642 is a reply to message #172601] |
Fri, 08 June 2012 19:02 |
bwevers
Messages: 597
Registered: October 2010
Location: San Jose
Karma: 5
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Senior Member |
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Ken,
I'll check again.
Thanks,
Bill
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose
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| Re: Air Bag Odor [message #173314 is a reply to message #172601] |
Thu, 14 June 2012 13:50 |
bwevers
Messages: 597
Registered: October 2010
Location: San Jose
Karma: 5
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Senior Member |
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It was strange looking. But not green.
We put baking soda and charcoal in there.
The odor is going away... 
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose
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