08 Denali XL gremlins

[dlr2416]

Breanne
Can I email you. I can't send you a pm because I have not posted enough messages.

 

[snaward]

Update - I did take my denali to the dealer and this time they did give me a truck to drive, so that helped alot.

The list of problems I gave them this time:
1. The not starting until you wiggle the battery cables
2. The rear hatch would not open (the window would work). After re-starting the hatch would operate as normal
3. The radio turning off and then back on while driving.
4. The radio turns off when you turn off the igition instead of when you open the door.

They maybe all related, I just hope they can find the cause.

 

[GM Customer Service]

Snaward,
Keep us updated as to what the dealer finds out!
Breanne
GMC Customer Service

 

[snaward]

The dealer was unable to get any of the problems to happen. So no luck on that end. Now we have a car with a problem that will probably happen at the most inconvient place or time potentially leaving my family stranded somewhere - NOT GOOD.

They also did a fuel pressure check and it checked out fine. So the stalling issue is still not resolved either.

Anybody out there have any ideas I can chase down. I ordered a maintenance manual today so I can at least look at the electrical wiring system.

It seems to me all these recent issues are probably related to a bad or loose ground connection somewhere. Another piece of info, that to me, also points to a ground issue is that when we had the random issues the outside temperature was cool (<40 deg F and dry). The two days the dealer had the car the temperature was warmer and humdid. Per electrical code for hazardous environments, an environment with a humdidity level greater than 60% a person can not build up static charage because the air will dissipate it as quickly as it created.

If we did not like the car so much for its functionality it would be traded by now.

 

[snaward]

Fixed - maybe

Well we had some good news. The car was acting up again (radio going on-off, misc warnings, etc) while my wife was near the dealer, so I told her to go strait there. Two techs road with her and nothing, but we left it anyway because we had been having the issues for a few days off and on and just hoped that this time the car would mal-function while at the dealer.

Well low and behold the car acted up while at the dealer. He was able to find a bulletin (#PIT4816D) related to symptons and what to check. He found both the positive and negative battery cables voltage drop was out of spec so they replaced both of them.

Now time will tell if it is really fixed, so we are keeping our fingers crossed.

 

[AmazinglySmooth]

Well we had some good news. The car was acting up again (radio going on-off, misc warnings, etc) while my wife was near the dealer, so I told her to go strait there. Two techs road with her and nothing, but we left it anyway because we had been having the issues for a few days off and on and just hoped that this time the car would mal-function while at the dealer.

Well low and behold the car acted up while at the dealer. He was able to find a bulletin (#PIT4816D) related to symptons and what to check. He found both the positive and negative battery cables voltage drop was out of spec so they replaced both of them.

Now time will tell if it is really fixed, so we are keeping our fingers crossed.

It makes you wonder, why didn't the dealer search the TSB's the first time? I think GM needs to improve the training of their dealers.

 

[Sheriff]

I have a 08 Denali. After driving for extend period, engine idles rough dies when we come to a stop. It does restart after a period of time. So far it has happend 4 times. First time it restarted after a few minutes. After the second it was towed and the dealer replace the throttle body (we were stranded out of town waiting for it to be fixed).

Interesting. Throttle body replaced under warranty? I couldn't get the delaership to do a damn thing on my throttle body. But once I replaced it on my own nickel, everything cleared up overnight.

Does GM have any "super" techs that can trouble shoot car problems when there are no computer error codes?

Based upon my personal experience, I would say NO. They don't seem to do much even if codes are present.

I just bought a new F250 Lariat Super Duty. I went back to Ford. My daughter still likes the Tahoe, so it's more or less hers now. I gave her a business card from my preferred local towing service and told her she will need it.

---------- Post added at 03:54 PM ---------- Previous post was at 03:46 PM ----------

I have an 08 Denali and have had issues with the AC. After driving for about 30 minutes or so, no air at all would blow out of the vents even though you can hear the blower fan runnin like crazy. Neither cold or hot air would blow out. I went to the local GM service shop, told them about the problem and they keep my Denali for over two weeks. When I finally called them they acted like they didn't even have my car. Two days later they called and sait it was done. I still have the same problem. My Denali has been in twice fo the same problem and its not fixed yet. GO GM Service Team!!!!!

HaHaHa! Ohh, sorry, couldn't help but laugh! Your dealership sounds about as competent as mine. I have to troubleshoot my own problems, tell them what to fix, and pay for parts and labor out of my own pocket. I do remind them that my car is there in case they think they will take it out back and park it for 2 weeks and get by with it.

I had a customer satisfaction call from a girl at my dealership pertaining to my most recent repair. I let her know I was not a happy camper. She was sorry to hear this and said the Service Manager would certaily want to call me and discuss the issue. Did he ever call? NO! Did I ever get a customer satifaction survey in the mail from GM like I normally do? NO!

---------- Post added at 03:55 PM ---------- Previous post was at 03:54 PM ----------

It makes you wonder, why didn't the dealer search the TSB's the first time? I think GM needs to improve the training of their dealers.

Most of them are independant dealers, GM says they have no control over them. Which is fine, my local dealer just lost a $55,000 sale because of their service department.

 

[domin8]

Are you done yet Sheriff? Geez.

 

[AmazinglySmooth]

Most of them are independant dealers, GM says they have no control over them. Which is fine, my local dealer just lost a $55,000 sale because of their service department. [/QUOTE]

GM does have control over their training and the incentive programs. GM should be focused on its customers, especially if dealers are hurting its image.

 

[Sheriff]

Are you done yet Sheriff? Geez.

Nope. I won't recommend another GM product to anybody.

---------- Post added at 09:51 PM ---------- Previous post was at 09:46 PM ----------

GM does have control over their training and the incentive programs. GM should be focused on its customers, especially if dealers are hurting its image.

GM just recorded their highest profit on record this last quarter. After the taxpayers bailed them out of bankruptcy no less. And I personally think they achieved this record profit by asking dealers to cut back on warranty repairs. Although my issues have been few on my Tahoe, I have not been able to get anything done under warranty. They always have an excuse of why warranty should not cover a repair. They won't even pay my $40 tow bill when the throttle stuck open on my Tahoe and had to be towed in for service. And this was after the service department acknowledged the throttle was still stuck the next morning when they started the engine. It appears a GM warranty is not worth the paper it is written on lately IMHO.