9 replies to this topic

[LS2INSIDE]

Ok, so today I went to the dentist. When I shut the car off, the blower
motor stayed on full blast. I attempted to start the car, thinking maybe
it was a glitch or something. But nope, I tried shutting it off by hitting
the button, then it just switches from blowing out of the top vents
to blowing out to the windshield. I had to pull the fuse out so the
battery wouldn't die. Anyway one else have this problem???
I only have 3000 miles on the truck. I already set up an appt
to bring her in tomorrow. Hopefully I can have some info if
anyone else had this happen to them.

[JaSSon]

Haven't heard of this one.

[LS2INSIDE]

Brought it in a 8:00am .No word yet on the truck. But they did give
me a loaner car!! A nice bright red 4 door Chevy Cobalt with
roll up windows!!!! Talk about a down grade!!! I didn't know they
still made roll up windows. I'll let you guys know what the verdict is
later on.

[mbaker28]

06-01-39-002C: Blower Motor Inoperative or May Not Shut Off in Extremely Low Ambient Temperature Conditions (Replace Blower Motor Control Module) - (Jan 18, 2008)
Subject: Blower Motor Inoperative or May Not Shut Off in Extremely Low Ambient Temperature Conditions (Replace Blower Motor Control Module)


Models: 2004-2007 Buick Rainier

2003-2006 Cadillac Escalade Models

2003-2006 Chevrolet Avalanche, Silverado, Suburban, Tahoe

2003-2007 Chevrolet TrailBlazer Models

2007 Chevrolet Silverado (Classic)

2003-2006 GMC Sierra Models, Yukon Models

2003-2007 GMC Envoy Models

2007 GMC Sierra (Classic)

2003-2004 Oldsmobile Bravada

2003-2006 HUMMER H2 Models

with Automatic Temperature Control HVAC System (RPO CJ2)




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This bulletin is being revised to update the model years that are affected and add the Oldsmobile Bravada. Please discard Corporate Bulletin Number 06-01-39-002B (Section 01 -- HVAC).


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Condition
Some customers may comment that the blower motor is inoperative or continues to run after the vehicle has been shut off.

Cause
These conditions may be caused by a blower motor control module failure. This failure may occur when the vehicle is operated in ambient temperature conditions of -23°C (-10°F) or below.

Correction
Important: Replace the blower motor control module if the vehicle experienced a blower motor control module failure in extremely cold ambient temperature conditions.

Technicians are to replace the blower motor control module, also called the Linear Power Module (LPM), with the P/N listed below. Refer to either the Blower Motor Control Processor Replacement or Blower Motor Processor Replacement-Auxiliary procedures in SI. After replacement of the blower motor control module, the customer may notice a slightly higher than expected blower motor speed at any of the blower speed settings.

Parts Information
Part Number
Description
Qty

89018849
Module Assembly, Auxiliary Blower Motor Control (Rear System on Escalade ESV, Suburban, Yukon XL)
1

89018964
Module, HTR & BLO & A/C CONT (Front system only vehicles - Except H2)
1

89023355
Module Assembly, Blower Motor Control (H2 Models)
1

89024926
Module Assembly, Auxiliary Heater & A/C Control (Rear System on Escalade, Yukon, Tahoe)
1


Warranty Information
For vehicles repaired under warranty, use:

Labor Operation
Description
Labor Time

D0890
Module, Blower Motor Control - Replace
Use Published Labor Operation Time

Add
Diagnostic Time

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information 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


© 2008 General Motors Corporation. All rights reserved.

[ILTBSS]

Cause
These conditions may be caused by a blower motor control module failure. This failure may occur when the vehicle is operated in ambient temperature conditions of -23°C (-10°F) or below.

I doubt it was that cold in NY this time of year. Also, he has an '08. That TSB only covers up to '07. All that said, I wouldn't be surprised if that's his problem.

Edited by ILTBSS, 18 April 2008 - 02:03 PM.

[mbaker28]

No difference between parts catalog on 07 or 08 blower control module. I have seen it before, have them replace the module and you will be fine.

[ILTBSS]

No difference between parts catalog on 07 or 08 blower control module.

No difference between 2002 through 2008 with the paint chipping, either. But, the dealers need the updated TSB each year before they'll do the obvious.

[mbaker28]

Unfortunately, you are right most people wont do things unless slapped in the face with it, and then sometimes you still you cant get them to see things.

[LS2INSIDE]

I doubt it was that cold in NY this time of year. Also, he has an '08. That TSB only covers up to '07. All that said, I wouldn't be surprised if that's his problem.

Yeah, it was 70 degrees when this happened. So I doubt it's the extremely low temp. Hopefully they
can fix it today, but more than likely they are probably going to have to order the part. I'm still
waiting for them to call me back.

[LS2INSIDE]

UPDATE!!! Guess what?? They didn't fix the truck yet. They told me
they were still "trying to figure out the problem" and that "your
truck is too new so my technicians are trying to download the
schematics." Then I call back later on and they told me "We
downloaded the schematics, but the computer we downloaded
it on, the printer doesn't work." What kind of half assed operation
are you guys running here. Needless to say my truck has to
spend the weekend at the dealership and wait til Monday. At least
they gave me a loaner car to take home for the weekend. I can't
wait to hear what they have to tell me on Monday. I printed out the
information at the blower motor module failure to give to them on
Monday, maybe that might set off a lightbulb, a dim light, but a light
none the less!!!!