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#197 of 459 2009 Electrical Problems
Oct 27, 2011 (4:55 pm)
I have a 2009 Tahoe with an intermittent but complex problem with the electrical system. I can go a couple of days driving short trips with no problems but then after driving a few days the problem rears itself. First the lights (intererior and exterior) will blink for a second and then the door locks will go up and down sometimes just once other times multiple times. Then the information center display (odometer and temp) will go out for a few seconds. Then the air conditioning system will start to sound like the fan air is being blocked and won't come out of the vents and finally the outside air temp indicator on the air conditioning display will drop to 55 and the buttons for passenger, rear will all light up and because the outside temp is reading 55 the air conditioning is set to auto it will switch to heat (it's 85 degrees outside) because of the false 55 degree reading on the outside air temp sensor indicator. Also on a couple of occasions the cd player kept cycling like it was trying to eject a cd but there was no cd in the player. I took it to Chevy and because it is intermittent they said that I should only bring it in when it's having problems otherwise they wouldn't find any error codes or see the problem. I did take it to a local certified shop to check alternator and battery and they scanned but didn't find any error codes or problems. I took a chance and had the body control module replaced on the advice of some mechanics and that didn't do the trick - so even though you may be desparate don't throw away money on guessing - it gets expensive. I've only had one time when the car died and then wouldn't start but it was scary because I was on a 4 lane highway divided by a center lane for turning and I just made it across the oncoming traffic to get off the road. I love the car but hate the uncertainty and can't let my kids drive it for sure. I've read some of the "fixes" which include checking a black wire with yellow stripe on the back of the engine and making sure connectors are tight everywhere and of course had the alternator and battery tested. I'm not sure what to do at this point because of the intermittent nature of the problem. For those of you who have had similar problems have you been able to have the problems properly diagnosed and identified/fixed?
#198 of 459 2008 Chevy Suburban won't start
Oct 27, 2011 (8:18 pm)
I am at my wits end here. I purchased a 2008 Chevy Suburban about 6 months ago. Up until about 10 days ago, it ran like a champ. The last week in a half, however, it will not start. I go out in the morning, and the lights, radio, etc. all work, but the car just will not start. Once it is hooked up to jumper cables, it starts right away. However, when I get to my destination, I cannot turn it off, or it will be dead again. It has the backup camera, navigation screen, DVD players, heated seats, etc. Obviously something is draining the battery, but would the lights and such still work if so?
One thing I also wonder about is the remote start. We just started using it about 2 weeks ago for the first time. Now all of the sudden, my car won't start.
Has anybody ran across a problem like this with their car? I am at my wits end..I am a traveling photographer, and have gotten stranded at a handful of shoots because of this.
Any help is appreciated greatly!
#199 of 459 Re: 2009 Electrical Problems [t_tex]
Oct 29, 2011 (4:26 am)
Follow Up: I've been reading alot of similar situations to mine (electrical malfunctions with door locks, lights, ignition, radio,etc.)- all with GM vehicles and I can't help but think that maybe a component that is common to all these vehicle is the culprit - Onstar Module. Onstar controls door locks, can shut your ignition off, can slow your car to a stop, can affect lights, horn, and radio, and is circuited through all the electrical modules that controls these things. Even if you don't use your Onstar it is still connected to your communication bus and electrical systems. Onstar is disabled when you disconnect the battery, hence your car will start when you disconnect then reconnect your battery. I've got the same problems and I'm going to have Chevy look into this and possibly disconnect the Onstar or pull fuse to see what happens. For everyone who is posting with these same problems, PLEASE post back if you find a resolution to your problem. Thanks
#200 of 459 Re: There is a "class" for a class action suit [gmcustsvc]
Oct 31, 2011 (10:47 am)
I have not taken it to a GM Dealer...from what I have read on the boards, this appears to be a problem with no solution. I cannot afford to have my vehicle in the shop for days on end, spending hundreds to thousands of dollars on a problem that according to some "GM knows about, but doesn't have a solution." And, of course, the vehicle is out of warranty. I have had it at a high-tech shop...they ran all the diagnostics and tests, but found nothing. Fortunately, I have a good relationship with the shop owner, and he didn't charge me anything, because he couldn't find anything wrong.
I have no problem taking it to a GM dealer IF THEY HAVE A SOLUTION and can fix it once and for all.
#201 of 459 Re: 2009 Electrical Problems [t_tex]
Oct 31, 2011 (10:49 am)
Please post if you find anything out...that sounds like a possibility. I hadn't thought about the On-Star module...
#202 of 459 Re: 2009 Electrical Problems [t_tex]
Nov 01, 2011 (8:38 am)
I see that you have already visited your dealer and they encouraged you to return when the concern arises again. Iím sorry it wasnít able to be resolved at that point, but thank you for your patience! Please keep us posted, of if you would like Customer Assistance, email Christina here.
GM Customer Service
#203 of 459 Re: 2009 Electrical Problems [t_tex]
Nov 02, 2011 (12:10 pm)
GM has a TSB that related to some of the problems that you list, I have posted part below.
If you call BBB Industries tech line (Go to bbbind.com) for phone number, they should be able to get you a copy.
LOSS OF HIGH SPEED GMLAN COMMUNICATIONS, INTERMITTENT NO CRANK, IP
GAGE FLUCTUATION, INTERMITTENT DOOR LOCK CYCLING, INTERMITTENT
CHIME OPERATION, VARIOUS IP WARNING LAMPS ILLUMINATED,
TRANSMISSION MAY NOT SHIFT, COMMUNICATION DTCS U0073, U0100, U0101,
U0102, U0109, U0121 OR U0140 SET (REPAIR TERMINALS IN TRANSMISSION
HARNESS CONNECTOR, REPAIR OPEN OR SHORTED GM HIGH SPEED LAN
CIRCUITS, OPEN OR SHORTED DATA LINK RESISTOR, CORROSION OR POOR
CONNECTIONS IN VARIOUS CONTROL MODULE CONNECTORS)
TECHNICAL SERVICE BULLETIN
Reference Number(s): 08-07-30-021F, Date of Issue: May 26, 2011
2007-2010 Cadillac XLR; 2007-2011 Cadillac Escalade Models; 2009-2011 Cadillac
Escalade Hybrid; 2007-2011 Chevrolet Avalanche, Corvette, Silverado, Suburban,
#204 of 459 Re: 2009 Electrical Problems [tr_bbb]
Nov 02, 2011 (4:21 pm)
Thanks TR BBB - I took the Tahoe back in to Chevy on Monday and this time I left it with them. Haven't heard anything yet but I did give the service man who wrote up my repair ticket a copy of the TSB you referred to. I had found a really good copy at
http://www.dixie-electric.com/tsb/TSB_198.pdf It's very detailed and I'm sure the techs at Chevy will run their diagnostics by protocol but I thought I would give them the document with a check by all the problems that were relevant to my 09 Tahoe. I just hope they come up with some codes so they have something to go on besides my listing of all the intermittent problems.
#205 of 459 Re: 2009 Electrical Problems [t_tex]
Nov 09, 2011 (11:08 am)
t-tex, Did the dealership solve the problem?
#206 of 459 Re: 2009 Electrical Problems [tr_bbb]
Nov 11, 2011 (11:25 am)
It was there for one week and when I picked it up they said that they did find a couple of wires under the dash that were chafed and they repaired those and rerouted some other wiring but they never could replicate the problem. I drove the Tahoe for about 130 miles and it started the same problems all over again. The problem was that when all the lights start coming on/door locks start cycling up and down it then goes into limp home mode and I have to pull over, disconnect and reconnect the batter and then it runs fine for another 100 miles. So now they are just driving it until the car act up and hopefully it will be close enough to the dealership so they can drive back in limp home mode.