Multiple Electrical Issues - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

General If it doesn't fit in any other forum

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  #1  
Old 01-02-2013, 01:39 PM
bige2020 bige2020 is offline
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2007 Chevy TrailBlazer LT
Bordeaux Red Metallic 4.2L I6 2WD
Join Date: Jan 2013
Location: Lexington, KY
Posts: 3
Multiple Electrical Issues

My girlfriend drives a 2007 Chevy Trailblazer LT with the 4.2 and its having multiple electrical issues. We have already replaced the ignition switch and the alternator, and that has not helped. The battery is being drained by something, even only a few minutes after the engine has been turned off. The battery tested good also.

The biggest thing that we have noticed is that the heater fan doesnt really work unless under acceleration, and even then its very weak. Its not a coolant/water pump/thermostat issue. However, the fan will stay on after the ignition has been turned off.

Also, one radio speaker stays on.

The drivers side memory seat only works occasionally.

The key fob is acting crazy.

From everything I have read, its either a rubbed wire/bad connection, or the BCM has gone bad. I did have a diagnostic done on it, and the steering wheel position sensor is bad.

Could the steering wheel sensor problem cause the BCM to stop controlling everything else properly or is the BCM the likely culprit?
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  #2  
Old 01-02-2013, 02:37 PM
Machoman Machoman is offline
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2005 GMC Envoy SLT
Black 4.2L I6 4X4
Join Date: Apr 2011
Location: St. Paul, MN
Posts: 50
serpentine belt?
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  #3  
Old 01-02-2013, 03:09 PM
bige2020 bige2020 is offline
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2007 Chevy TrailBlazer LT
Bordeaux Red Metallic 4.2L I6 2WD
Join Date: Jan 2013
Location: Lexington, KY
Posts: 3
Quote:
Originally Posted by Machoman View Post
serpentine belt?
Yep, and its fine.
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