Question about 2006 Chevrolet HHR
Do you have a professional scanner ,do a scan of the whole vehicle . Instrument cluster , BCM , etc... Not OBD2 scan from autozone or advance etc.... thier tool can't check the whole vehicle network . The control module's on your vehicle all share information on what is called a serial data bus ,or communication network. (
temperature guage not working- sending unit keeps blowing, )
I don't think the sending unit is the problem , an it's not a sending unit . It's a engine coolant temperature sensor ,an it's a input to the PCM/ECM - engine computer . The engine computer send's this info. to the instrument cluster on the GMLAN data network . GM had problem's with stepper motors in the instrument clusters . The stepper motor control's the gauge needle.2003 to 2006
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Also sounds like you have wiring harness issue's ,finding an viewing wiring diagrams an using a DMM - digital multi-meter to test affected circuit's is the way to a fix. Not guessing !
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Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model an engine size. Under system click on lighting ,then under subsystem click on headlamps . Click the search button then the blue link . Looking at the diagram you will see the headlamp / multifunction switch is a low voltage input to the BCM - body control module , do you know anything about automotive electronic's ? The high beams are contolled by a relay energized by the BCM . Check through some of the other wiring diagrams ,for the dash light's , pull the instrument cluster an check connection's ,power & ground circuit's etc...
Posted on Nov 27, 2017
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Posted on Jan 02, 2017
SOURCE: dimmer switch instalation
The harness is worn on the inside of the steering wheel needs to be removed and the harness repaired or replaced. This is dangerous because it has air bag inside, if you want to do this post here and I will post the proceedure to do this with.
Posted on Oct 17, 2009
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