Last post on Nov 19, 2013 at 12:41 PM
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Chevrolet Tahoe, Electrical, SUV
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#275 of 456 Re: 2008 Chevy Tahoe Electrical Problems [ag75]
Apr 13, 2012 (6:50 am)
I'm still experiencing electrical problems with my 08 Tahoe. Two days ago, while driving on freeway, door locks began popping up and down, dash gauges were going crazy and car appeared to be losing total electical power. I pulled into gas station who convinced me that my alternator was going out. (TEch gage Reading 1200 instead of the 1480... normal reading on a healthy alternator. I replaced the alternator. Now, last night. I parked the car and could hear the radio/CD making some funny noises for some time after I pulled the key out of the ignition. I started car but noticed that the radio hour clock had reset to 12:00 - meaning the electrical problems are still present. As I drove away, the Tahoe was running rough as if it wanted to die. I turned off the entire Vent/ A/C unit. Car headlights still flicking a bit. Has anyone thought about problems with a recall on the car's computer or electrical system?
I found this recall online: 08 chev Tahoe:
Recall ID # 74931 - ELECTRICAL SYSTEM Hide Details
Recall Date AUG 28, 2008
Component ELECTRICAL SYSTEM
Model Affected Tahoe
Potential Units Affected 857735
AUG 28, 2008
2008 Chevrolet Tahoe
GM IS RECALLING 857,735 MY 2006-2008 BUICK LUCERNE; CADILLAC DTS; HUMMER H2; MY 2007-2008 CADILLAC ESCALADE, ESCALADE ESV, ESCALADE EXT; CHEVROLET AVALANCHE, SILVERADO, SUBURBAN, TAHOE; GMC ACADIA, SIERRA, YUKON, YUKON XL, SATURN OUTLOOK; AND MY 2008 BUICK ENCLAVE VEHICLES EQUIPPED WITH A HEATED WIPER WASHER FLUID SYSTEM. A SHORT CIRCUIT ON THE PRINTED CIRCUIT BOARD FOR THE WASHER FLUID HEATER MAY OVERHEAT THE CONTROL-CIRCUIT GROUND WIRE.
THIS MAY CAUSE OTHER ELECTRICAL FEATURES TO MALFUNCTION, CREATE AN ODOR, OR CAUSE SMOKE INCREASING THE RISK OF A FIRE.
DEALERS WILL INSTALL A WIRE HARNESS WITH AN IN-LINE FUSE FREE OF CHARGE. THE RECALL BEGAN ON SEPTEMBER 12, 2008. OWNERS MAY CONTACT BUICK AT 1-866-608-8080; CADILLAC AT 1-800-982-2339 OR HTTP://WWW.CADILLAC.COM; CHEVROLET AT 1-800-630-2438; SATURN AT 1-800-972-8876 OR HTTP://WWW.SATURN.COM, GMC AT 1-866-996-9436; OR HUMMER AT 1-800-732-5493; OR THROUGH THEIR WEBSITE AT HTTP://WWW.GMOWNERCENTER.COM .
Potential Units Affected:
Read more: http://www.motortrend.com/cars/2008/chevrolet/tahoe/recalls/#ixzz1rvpNn6f7
#276 of 456 Re: 2008 Chevy Tahoe Electrical Problems [traveler2012]
Apr 13, 2012 (7:31 am)
I can check to see if your vehicle is associated to this recall if you wanted to send us the last 8 digits of your VIN; our email is socialmediagm.com if you would prefer to send it privately.
Look forward to hearing from you,
GM Customer Service
#277 of 456 Re: 2008 Chevy Tahoe Electrical Problems [traveler2012]
Apr 13, 2012 (5:26 pm)
I've had no issues since removing the negative and positive battery cables for 16 hours. You should give that a try.
#278 of 456 Electrical Problems
Apr 14, 2012 (2:41 pm)
I was stationed in Afghanistan for a year and I come back to my wife telling me that our 07 Tahoe has been doing the same things as mentioned in all previous posts. The scary part about it is that she has been traveling with our 3 kids in the vehicle with her when the vehicle shuts off and keeps coasting until it turns back on again. At one point she was in a remote location getting gas and the vehicle wouldn't start for about 10 minutes. I have an extended warranty that I purchased when I purchased the vehicle but my GM Certified warranties are up as the vehicle now has 99,000 miles. I took it a the dealer today in VA. I gave him the 021F TSB. Hopefully something comes about this.
Sarah, seeing so many vehicles are having this issue what is GM doing to rectify this situation? May I also send you my VIN to see if I am part of this recall?
#279 of 456 Re: 2008 Chevy Tahoe Electrical Problems [gmcustsvcsarah]
Apr 15, 2012 (4:39 pm)
I have a 2008 Suburban LTZ I just purchased 2 weeks ago. My problems are very similar to the others listed here. First started when I was driving on the highway and used my turn signal, my radio powered down and back on by itself. Then my cruise control would just turn off while driving on the interstate. Now I am getting the total electrical shut down, all guages go dark and then vehicle seems to power back on at will. locks pop up and down, seat belt chimer starts chiming just as if I used the remote start and then inserted the key and turned it to the on position. I have had it at the dealer, tech even drove it home to try to duplicate the problem. They say they can't find a problem. I have noticed that the frequency of occurrences are when the temp outside is over 80 degrees, running the A/C and vehicle is warmed up. Also I have noticed the Volt guage at start up is reading over 14 volts and as long as it stays there it does fine but will drop down to around 11 or 12 volts after driving a while, thats when the problems occur. I just had a new alternator installed and as soon as I left the repair shop it started again.
I had a similar problem with a Cadillac STS back in 2002 and they eventually had to replace the entire wiring harness after 4 months of diagnostic. They said there was a bare wire grounding out against the frame of the car.
My vehicle has 77k miles and the factory powertrain is all that is active with the warranty.
What are my options?
#280 of 456 Re: Electrical Problems [bvilchez]
Apr 16, 2012 (10:10 am)
Please do, and thank you for your service to our country! Our email is socialmediagm.com
All the best,
GM Customer Service
#281 of 456 Re: 2008 Chevy Tahoe Electrical Problems [ck2012]
Apr 16, 2012 (10:15 am)
If you haven't already, please send an email to socialmediagm.com (include your name/Edmunds username, phone and address, the last 8 of your VIN and current mileage, and the name of your involved dealership, as well as a description of the issue and any visits you have made to the dealer for it) and we will explore any options that may be available; however, I cannot guarantee any results up front.
All the best,
GM Customer Service
#282 of 456 2008 Chevrolet Silverado Electrical problems
Apr 20, 2012 (1:40 pm)
I'm active duty Navy and just purchased a 2008 silverado ltz(last nine of VIN: 481124518) . It currently has 71000 miles on it. I was driving down the interstate when the interior gauges, radio, door locks and temperature indicator all flashed off and cut right back on. Anytime I would use the turn signal the radio would cut off and the 'Park Assist Off' would flash on. It continued to do this the whole way home (approximately 30 minutes). I parked the truck and shut it off. Let it sit for about 30 minutes and then went to crank it up. Initially it acted like the battery was dead. I tried a second time and the truck cranked right up. I haven't taken it to a mechanic yet. Help please???!!!!
#283 of 456 Re: 2008 Chevrolet Silverado Electrical problems [bran164]
Apr 21, 2012 (9:38 pm)
Bran164 – Sorry to hear of your car’s electrical problem. But even more sorry is the extremely long line of GM car/truck electrical issues (from just this forum alone) that remain unsolved and correspondingly the enormous amount of consumer time and money wasted at the GM related dealerships and other repair facilities in pursuit of fixing these problems. Your vehicle, unfortunately, is most likely experiencing a failure of the GMLAN system. While the problem is not unfixable, GMLAN is very complex and so inadequately supported by GM that probably 95% the dealerships’ service departments have neither the expertise nor capacity to diagnose and properly fix these problems, in my opinion. You only need to read a number of the posts in this forum and you will begin to understand the frustration of consumers who have spent thousands of dollars as well as weeks and even months with their GM vehicles out of commission, all because dealer service departments have misdiagnosed the electrical problems and as a result, incorrectly replaced expensive electrical components that didn’t need to be replaced and ultimately didn’t fix the problem. I hope your vehicle’s electrical problem gets fixed soon and if it is please let the rest of us know what the problem was and how it was fixed. Click on the link to get a glimpse of just some of what can be causing your vehicle’s problem.
http://www.autoserviceprofessional.com/article/92084/finding-gmlan-wiring-proble- ms (cut and paste into your browser if the link doesn't work)