Last post on Nov 19, 2013 at 12:41 PM
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Chevrolet Tahoe, Electrical, SUV
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#218 of 456 2007 Tahoe Electrical
Dec 04, 2011 (8:31 am)
We have a 2007 Tahoe, didn't have any electrical problems until we brought it in for a oil change at a shop on a road trip before returning home. They said there was a update on the computer so that was done. Worst thing we did. Ever since the air bag light comes on, now my engine light comes on, anti skid light. What is next? The vehicle just hit 40 k miles and has 4 payments until it is ours. Lovely. The question is to attempt to fix- which it looks like nobody has really had any success and chevy doesn't care or to get rid of? The vehicle is great besides these issues. It is the most comfortable and would recommend if there wasn't this issue. But, now I may second that thought. Don't want my friends to go through this. Unhappy..
#219 of 456 Re: 2009 Electrical Problems [t_tex]
Dec 05, 2011 (12:19 pm)
Well, 3 more days in the shop (8th visit overall) and they still have no clue. This time they sent me home with a 10-page "conditions checklist" to complete the next time that it happens. This is BS. I am ready to escalate.
#220 of 456 Re: 2009 Electrical Problems [jbossert]
Dec 05, 2011 (6:44 pm)
My 2009 Tahoe is still in the auto electric specialty shop here in Houston. They are making progress. They have found some damaged wiring in the dash and are methodically checking each module on the GMLAN system to make sure each module is working AND has the most current software update. It's slow going but very methodical and necessary. All auto electrical problems can be fixed - it's just finding the right shop that has techs who are trained and willing to take the time to properly diagnose and repair the more complex GMLAN system issues. As I mentioned before too many dealer shops just don't have techs with proper training in complex GMLAN troubleshooting and definitely have a financial motivation for finding the quickest solution and sending you on your way so they can get to the next throttle body replacement or other simple but high dollar repair.
#221 of 456 2007 Tahoe Electrical Problem
Dec 06, 2011 (10:32 am)
80-90 percent of the time when I open a door, the back hatch pops open at the same time. Sometimes after I close the hatch and then close the door that hatch pops open again. This can go on repeatedly but sometimes it's just once. My concern is that if I don't remember to close the hatch the battery can die, which it has once. Would changing the battery help? Any other ideas? Thanks!
#222 of 456 Re: 2009 Electrical Problems [t_tex]
Dec 09, 2011 (8:35 am)
I have a 2007 tahoe ltz. It has 56000 miles on it and just started having the electrical problems. However reading some of the other posts I am realizing this is a major issue. The tahoe started acting up a year and a half ago with the tire presure monitor not reading but it was intermintent. Now it is doing what the others are doing all my dash warning lights go on, door locks go crazy, all my gauges die, service trans message, loss of power, its bad. I am taking it in next week and praying they can fix it. I have found that it happens when I hit the brakes. The other day I was just sitting in front of my house and slowly moved forward and lightly pushed the brakes and everything went haywire. My wife came up put my daughter in her seat and slammed the back door and everything went back to normal. Then she got in the passanger side and closed that door and everything went crazy again. Weird, but seems like it must be the wiring is loose or has a short. Remember the recall for the wiper blade fluid they supposedly fixed by turning off, the letter I recieved said it could cause other systems to malfunction. Looks like it did. I am not happy. This is an expensive vehicle with barely any miles. I am giving them a chance to fix it other wise I will tell them to keep it. Its not safe anymore, my family my life rides in that car and now its giving me anxiety every time my wife drives it. Not worth it at all. I refuse to pay for something that i cant trust. i feel like i went to a shady carlot and bought the cheapest thing piece of crap I could find. If GM wont own this problem I will NEVER by another GM vehicle. Time to go with the Toyota.
#223 of 456 Re: 2009 Electrical Problems [mcdep99]
Dec 09, 2011 (8:50 pm)
You're right about the safety concern - it's not safe. GM must definitely know they have a problem with the GMLAN system. Whenever an apparent small wiring problem or short can throw a vehicle into the kind of electrical chaos that we've experienced with our GM vehicles, something is just not right - it has to be poor engineering. Unfortunately, GM does not want to take accountability for the design flaw. So far it's probably been cheaper to pay lawsuit settlements on lemon law claims and injury/death claims from accidents caused by these issues than have to recall hundreds of thousands of vehicles but these complaints are starting to get traction with consumer groups and consumer advocates/attorneys. They are just not going to be able to sweep a problem this big under the carpet.
#224 of 456 2009 Tahoe with Electric problems/cycling
Dec 13, 2011 (4:34 am)
I have a 2009 Chevy Tahoe with the same cycling problems that are listed throughout this forum. Has a vehicle ever been fixed? I brought my Tahoe into my local dealership and they put some electical grease on the wiring, strapped the wires together...basically put a band-aide on the problem. They did print me out a service bulletin about this very thing that GM issued: Document ID: 2665828 #08-07-30-021F: Loss of HIgh Speed GMLAN Communiciatons, Intermittent No Crank, IP Gauge Fluctation, Intermittent Door Lock Cycling/Chime Operation, Various IP warning Lamps Illuminated Trans May not Shify (Sept 14, 2011).....so my question is if they know about this problem to put out a service bulletin and the technicians have tried the 'fixes' and they still don't work....now what? I am really starting to get frustrated and all I ask is to have a vehicle i paid a lot of money for to work!
#225 of 456 Re: 2009 Electrical Problems [t_tex]
Dec 13, 2011 (4:37 am)
I received this bulletin from my local dealership...so GM is well aware of the problem...Document ID: 2665828 #08-07-30-021F: Loss of HIgh Speed GMLAN Communiciatons, Intermittent No Crank, IP Gauge Fluctation, Intermittent Door Lock Cycling/Chime Operation, Various IP warning Lamps Illuminated Trans May not Shify (Sept 14, 2011)
#226 of 456 Re: 2009 Tahoe with Electric problems/cycling [erw3]
Dec 13, 2011 (6:31 am)
Sorry to hear about your problems. No, my vehicle has not yet been fixed. I dropped it off again this morning (8th or 9th visit?). I have no reason to believe that they will any more successful today than they have been in recent months. I now have the name of our District Manager. I am going to escalate and see what happens. Oh, and my auto-ride suspention decided to stop working. The compressor kicks-on but the vehicle does not raise. I regularly tow horses around and the nose of my truck now points toward the sky. I hope that they can figure it out in short order.
I have owned over 20 GM vehicles in my lifetime and this is the very first Dud that I have had.
I'll post status on my repairs. Please do the same on yours.
#227 of 456 2008 Tahoe electrical problems...again
Dec 15, 2011 (2:56 am)
25k miles/engine control module went out. Just prior to that a sensor of some sort. Piddly stuff since then until yesterday. Now I have 90k miles, truck 3 1/2 years old. While changing the right fog lamp ($26 for a lamp, yeesh) I went to start the truck and noticed an "electrical system charging malfunction" notice on the DIC. Shut off truck, restarted, same message. Third attempt, same message. Parked truck and restarted 10 hours later. No error message. Drove truck approx 30 miles, parked, shut down for 5 minutes, went to remote start vehicle, vehicle started then shut right down. Any ideas before I haul the thing into the dealer at $100hr labor? Minnesota vehicle/cold weather conditions. Adding insult to injury, truck had an oil leak fixed under warranty. Oil leak apparently is back since I checked the oil and it was 2qts low. Thanks.