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Chevy Silverado and GMC Sierra Electrical and Computer Questions

768 messages,  Last post on May 07, 2013 at 9:49 PM

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What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Truck

    
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Messages Page 74 of 78

#725 of 768 2010 Silverado Computer Issues by ironranger36

Jul 04, 2012 (4:01 pm)

Hello All,
 
I am having an issue with my 2010 Silverado LTZ, 4WD, Crew Cab Z71. The problem started as follows: day 1, Mileage 37400: Drove my truck to work and parked it, no issues. I went to start it at the end of the day and the truck would not start. I looked down at the info window which said "SERVICE 4 WHEEL DRIVE". We tried to troubleshoot different ways to get it to start with no avail, until we removed the battery cable for 30 sec and replaced it. Everything was back to normal. I brought it to the dealer to have them plug it in just to make sure everything was ok. Unfortunately that was not the case, the computer was reading 12 communication errors. Needsless to say I was now 1400 miles over the bumper to bumper which apparently "electrical falls under" GREAT. After about two days of tracking down each fault and a day to replace the Transfer Case Control Module they got the faults to clear and I got me truck back. Two days later I was driving down a dirt road (luckly I was only doing about 5 mph) the brakes locked up on their own and then the fault lights lit up. Service 4 wheel drive, service abs, service stable trak, check engine, service traction control). This time the vehicle remained running but was stuck in 1st gear. I disconnected the battery and once again everything was gone. I brought it back to the service center and this time there was 18 communication faults. 4 days later I got me truck back with a brake control module replaced. Ran fine on the way home. Today I drove it to my sons school. When leaving I started it up and notice that my fault lights were lit up again. Additionally it would not shift pass 1st gear, the gear selected indicator was not on, the speedometer, rpm were not working. Is anyone else had issues like this and if so what was to end point fix that actually worked. The service station is definitely trying to help and are currently working with me on the bills. But I thought I would try to help them with idea's.

#726 of 768 Re: 2010 Silverado Computer Issues [ironranger36] by johnsaved

Jul 04, 2012 (5:10 pm)

Replying to: ironranger36 (Jul 04, 2012 4:01 pm)
It sounds like your truck is doing weird electrical things like my was. For me, it turned out that a main grounding point on the frame had come loose and was sending fluctuating voltages to the ECM's. If you haven't noticed already, for some stupid reason GM weather coats their frames with some sort of wax junk. My guess is that they come to the factory already waxed and then the assembly begins. My frame is a rusty mess due to water and ice getting between the wax and the steel frame in the winter. Then it freezes and the wax literally comes off in sheets, leaving large sections of steel unprotected. It looked like the ground points on the frame were never scraped down to bare metal before the wires were connected and when the water got behind the wax and froze, the ice pushed the wires out just enough to make the connections loose. The most noticeably loose ground was the one on the outside of the frame directly under the drivers door. It is just behind the front tire and get a direct hit from the road spray. My guess it is a loose ground. Good Luck!

#727 of 768 Re: 2010 Silverado Computer Issues [ironranger36] by gmcustsvc

Jul 05, 2012 (11:28 am)

Replying to: ironranger36 (Jul 04, 2012 4:01 pm)
ironranger36,
Thank you for taking the time to post your experience and concerns. Can you please email me directly with your VIN, current mileage, involved dealer, a brief description of your concerns (or a link to your post), and complete contact information? I would like to look into this further for you.
Christina
GM Customer Service
SocialMediaGM.com

#728 of 768 Re: Silverado Gauges, warning lights, radio, power window malfunction [thomaskray] by zars210

Aug 11, 2012 (12:31 pm)

Replying to: thomaskray (Feb 28, 2008 8:07 am)
I am currently having the same problem with my 2007 Sierra Classic. I am wondering if anyone can help pin point which ground wire could be causing it. I have already replaced my ignition switch which didn't help. Thanks.

#729 of 768 Re: GMC airbag deployment [labeldt] by lisaholbern

Aug 29, 2012 (8:49 pm)

Replying to: labeldt (Jul 12, 2011 9:52 am)
I had to get a lemon law lawyer to get General Motors to take back the lemon they sold me and I purchased a Ford.

#730 of 768 Re: GMC airbag deployment [labeldt] by lisaholbern

Aug 29, 2012 (9:03 pm)

Replying to: labeldt (Jul 12, 2011 9:52 am)
General Motors sent a rep from their esis(?) department, after he plugged in to the computer of the truck he said, that when the truck gets a little chatter -like driving on a bumpy road- the computer tellls the truck that it is rolling over causing the air bags to deploy. HORRIBLE COMPANY it took an electrical fire, 2 air bag deployments, a lemon law lawyer and 7 months before they would take back a truck they knew was defective.

#731 of 768 2008 Chevy Silverado - Electrical Issues by mjsellers

Sep 05, 2012 (5:08 pm)

I first noticed problems when my keyless remote would unlock all my other doors but the drivers side door. Then the radio started playing funny (like it's in a tunnel), my cruise control won't work and my passenger power windows won't roll down unless I use the front driver side buttons. I have searched the forum and found nothing. Has anyone else had this problem or can someone give me suggestions on what to do? Thanks.

#733 of 768 2009 1500 Computer Issue by 1500medinaoh

Sep 06, 2012 (6:23 pm)

Intermittent problem on my 2009 Chevy 1500 Crew Cab. While driving, suddenly get a Stabilator Trak Off message followed by a surge in RPM and numerous audible dings and warning lights on the dashboard. This goes on for approximately 10-15 seconds then everything appears to go back to normal. Then every few minutes, additional audible dings and warning lights go on and off for a few seconds. When the truck is stopped and turned off ALL electric is GONE...Turning the key has no effect...no interior lights, no radio, no fan, nothing. Moving the postive battery cable resets the computer and then everything appears to go back to normal. This problem has occured randomly 3 times in the last two months but there is no specific way to make it occur.
 
After resetting the battery cable, I took the truck to a dealer. They ran diagnostics and found no errors, so the computer is resetting and clearing the memory of any issues. Dealer asked me to bring it back when it occurs and have them run diagnostics before shutting off engine. Unfortunately, it has only occured during off hours when the Dealer is closed. This time I left it at the Dealer in the Electric Dead state and will see if they find anything.
 
Based on the numerous posts on this forum, it is obvious there is a serious design or production flaw in the Silverado/Sierra line. If you have experienced somthing similar to this problem, please let me know if a Dealer was able to correct the problem.
 
Thanks

#734 of 768 Ghost in the electrical system by jgagnon

Sep 06, 2012 (9:10 pm)

1500medinaoh,
I had the exact same issues right down to the complete electrical failure after a shutdown.
I first started noticing a slight flicker in the lights at night, but chalked it up to the
 kicking on. This was quickly followed by the radio time resting but none of the presents. I had the alligator checked and replaced the battery. The issue seemed to go away for a couple of months and then suddenly the brights issue would go on and off. The ignition chime would stay on when the key was removed. The doors would lock and unlock, the passenger seat airbag sensor would randomly go on and off. The traction control would cycle.....and now suddenly complete power failures at the most opportune times.I have a 2007 GMC Sierra Crew Cab TEXAS edition with around 60K miles.

Messages Page 74 of 78

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