smelly a/c

[emjcfj]

i have an 06 silverado and when i turn on the a/c i get a rotten egg smell. has not happened during the winter.anyone have this issue?

[GOTSAND4ME2]

HI there
Have you tried changing the cabin air filter?? A buddy of mine changed his and he got rid of a similar smell

[vegaschevy]

i have an 06 silverado and when i turn on the a/c i get a rotten egg smell. has not happened during the winter.anyone have this issue?

I agree with the gotsand4me guy..try the cabin air filters first.. then you might have got some mold issues going on or possibly a piece of debris in the evaporator core housing and or its drain tube.

[drumrob]

you can change the filter and if that doesn't work change your deodorant!!!

[98GMCSierra1500]

I have the same problem with my 98 Sierra... Does it have a cabin air filter too?

[Dr_Zero]

You ever listen to Car Talk? They had a guy call in with a similar situation and they said to read the lables close of the produts they sell for smelly ac's one was just alcohol.

They suggested looking at the cowl vent for a build up of trash and moldy leaves and clean them out and wash out the gunk and it should help.

If you got the cabin filter would change that out also after cleaning things out.

[1_low_rider]

Yea I would say change the cabin air filter then possibly look at the heater core, they are bad to go out

[MWright936]

Could someone take a picture showing the location of the cabin filter? I have had this problem as well, and people suggested the cabin filter, but I can't find it. Thanks!

[mjalstad]

The air filter doesn't make sense because if that was the problem, you would have stinky heat too so I wouldn't waste my time on that. I know there is a TSB for my GF's 06 Grand Prix about stinky AC that applied to a lot of models and I think the cause was water in the casing or something. I think they recommend drilling a hole in the bottom to drain it out and then putting some oil or something in there. Sorry I'm not too much help with that but hopefully I'm helping to steer you in the right direction.

[Dr_Zero]

You ever listen to Car Talk? They had a guy call in with a similar situation and they said to read the lables close of the produts they sell for smelly ac's one was just alcohol.

They suggested looking at the cowl vent for a build up of trash and moldy leaves and clean them out and wash out the gunk and it should help.

If you got the cabin filter would change that out also after cleaning things out.

Subject: Passenger Compartment Air Filter - keywords dirt dust HVAC
interior #PIT3330A - (02/16/2006)

Models: 2003-2006 Cadillac Escalade Models

2003-2006 Chevrolet Avalanche, Silverado, Suburban, Tahoe

2003-2006 GMC Sierra, Yukon Models

2003-2006 Hummer H2


------------------------------------------------------------------------
--------

The following diagnosis might be helpful if the vehicle exhibits the
symptom(s) described in this PI.

Condition/Concern:
A customer may inquire about the availability of the passenger
compartment air filter.

Recommendation/Instructions:
Starting in the 2003 model year, the passenger compartment air filter is
no longer available as a factory option. With the redesigned HVAC case,
there is no longer a cavity for the filter. The GM parts catalog
indicates there is a replacement filter available however there is no
provision for it.

Please follow this diagnostic or repair process thoroughly and complete
each step. If the condition exhibited is resolved without completing
every step, the remaining steps do not need to be performed.

GM bulletins are intended for use by professional technicians, NOT a


that could assist in the proper service of a vehicle. Properly trained
technicians have the equipment, tools, safety instructions, and know-how
to do a job properly and safely. If a condition is described, DO NOT
assume that the bulletin applies to your vehicle, or that your vehicle
will have that condition. See your GM dealer for information on whether
your vehicle may benefit from the information.
WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION


(c) Copyright General Motors Corporation. All Rights Reserved.

Thanks,
Mike Griffin
Fixed Operations Director
SouthPointe Chevrolet