2008 Silverado Work Truck Many Electrical Issues. - Chevrolet Forum - Chevy Enthusiasts Forums

2008 Silverado Work Truck Many Electrical Issues.


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LDiN's Avatar
CF Beginner

Join Date: Jun 2017
Posts: 2

June 17th, 2017, 6:28 AM   #1  
2008 Silverado Work Truck Many Electrical Issues.

Replaced the BCM, Fuse block and Multi function switch trying, with no luck, to get the following things to work. Any subsections on what to do next are welcome.

NOT WORKING:
rt turn
4 way flash rt front
rt ft parking lamps
dome light
courtesy lights
door chime
wipers, (Only high speed works)
wipe/wash
cruise control


Last edited by LDiN; June 17th, 2017 at 7:08 AM. Reason: Also, check engine light along with "ENGINE HOT A/C TURNED OFF" will appear for a while then go away, checking shows not hot
 
tech2's Avatar
CF Monarch

Join Date: Mar 2011
Posts: 5,066

June 17th, 2017, 9:03 AM   #2  
the wipers use something called a mux resistive circuit...if anything is wired in or changes the resistance of the circuit...nothing will work.

is the air bag light on. cruise, wipers run through the clockspring.

all of the body electrical system has diagnostic trouble code capability. See if body codes are set. You will need a full function scan tool to read these codes. these codes do not turn on the mil.

 
LDiN's Avatar
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Join Date: Jun 2017
Posts: 2

June 18th, 2017, 6:16 AM   #3  
Thanks for your response, The tech that programmed the BCM said there were no error codes. The passenger air bag light is lite and displays the word "Off". The airbag light/symbol on the instrument panel comes on when the key is turned on then goes off after a second or so and stays off with the engine running. The wiper problem would come and go (full function then high speed only) and after about a year its now high speed only. The rest of the issues, not all at the same time, started out the same way, part time fail and finally full time fail. All of this has taken place over a 3.5 year period.....

 
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