2003 GMC Sierra

  • 1 POST
  • 2003 GMC SIERRA

Air Conditioning problem
2003 GMC Sierra V8 Four Wheel Drive Automatic 145000 miles


When I shut my truck off the blower for my heater/ac continues to run and will do so until I take the fuse out, (labled BLOWER)

Do you
have the same problem?
Monday, April 14th, 2008 AT 7:56 PM

1 Reply

  • 1,060 POSTS

This might help, 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) Some customers may comment that the blower motor is inoperative or continues to run after the vehicle has been shut off. 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. 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), 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.

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Tuesday, April 15th, 2008 AT 8:47 PM

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