Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

BuckChevy25

TYF Newbie
Joined
Sep 27, 2022
Posts
15
Reaction score
19
First time Tahoe owner (GM for that matter) and recently purchased a 2023 Tahoe LT brand new (first new car purchase). At about 300 miles I randomly got multiple errors and flashing check engine light with engine running rough(photos and error codes from OnStar diagnostic). Traction control error, forward collision disabled, service ESC, etc. I was almost certain it was the dreaded lifter issue but couldn't believe so early at 300 miles. I was able to make it back home and OnStar required I get it towed into the dealership. After sitting in the lot for a few days, the dealership reset the check engine light and everything was fine. Service attributed as a software anomaly. Brought it back home and fast forward 700 miles and the issue occurred with the exact same thing. 3 days before we are supposed to take it on the first long road trip for the holiday.

Anybody experienced this issue? Have a suggestion on what to do? Wondering what my options are because I'm getting to the point of demanding to trade it in and see what the dealer can do for me because two events where the truck is inoperable and had to be towed in less than 1000 miles for $65k+ is unacceptable. Appreciate the advice. Merry Christmas!
 

Attachments

  • 2022-12-24_9-55-34.png
    2022-12-24_9-55-34.png
    67.2 KB · Views: 40
  • IMG_4937.jpg
    IMG_4937.jpg
    234.7 KB · Views: 36
  • IMG_4936.jpg
    IMG_4936.jpg
    209.3 KB · Views: 37

DuraYuk

Full Access Member
Joined
Sep 17, 2022
Posts
810
Reaction score
582
You need to find a different dealer. So many here try and blame the vehicle when in reality it's your crappy service department. This isn't practicing medicine, this is diagnosing problems correctly the first time. I used to be a GM transmission tech/heavy line and we had to fix things correctly the first time.

Resetting a battery is not fixing a problem. Resetting codes is not fixing a problem. Calling it an anomaly is not a fix.

Flashing check engine light is a misfire. I'm betting you have a fuel or fuel delivery problems. The rest of the lights sometimes go along with the check engine light. Id concentrate on the code first.

P0207 from my experience on the older stuff is usually an injector issue. Either with the actual affected injector 7, or wiring to it.

I have no idea why they would just reset it and send you home. When it could vary well be intermittent as most of these faults generally are.

Please, just go somewhere competent. You will have a much better experience.
 

Tahoe14

Full Access Member
Joined
Jun 10, 2014
Posts
1,703
Reaction score
920
Location
Central Fl
If you decide to use the Lemon Law look at the rules for your state via Google as they vary from state to state. You should also consider a Lemon Law attorney and most do not require money upfront.
 

DuraYuk

Full Access Member
Joined
Sep 17, 2022
Posts
810
Reaction score
582
If you decide to use the Lemon Law look at the rules for your state via Google as they vary from state to state. You should also consider a Lemon Law attorney and most do not require money upfront.
What is he lemon lawing? They haven't even attempted to fix anything lol. His service department sucks.
 

MassHoe04

Full Access Member
Joined
Nov 4, 2021
Posts
1,586
Reaction score
2,798
Location
Western MA
I would look for another authorized service shop. Someone with a brand new vehicle having their truck sit in the lot for a few days before they got around to checking what was wrong?! Doesn't seem right. They should have put someone on this right away (if not the next morning)! Clearing the code and saying it was a software glitch explains the problem away, too.

Mine is almost 20 years older than yours, so I am not up on what software can do to these things. I am aware, that the computers do almost everything now days.

But questions I would be asking:

The P0207 was a code specific to cylinder #7. If the software or computer says the readings were out of programmed parameters, then what could be triggering that condition?

The fact that you also saw traction control and front collision messages does point to possible computer or ECM problem, but I am wondering if there is any possibility there is a damaged or loose connector on the ECM or one of the main harnesses?

Maybe workers in the factory weren't all that careful during assembly and something got nicked or damaged in the process, leading to an intermittent problem.

Good luck! I hope they can get your problem resolved.
Merry Christmas!
 
OP
OP
BuckChevy25

BuckChevy25

TYF Newbie
Joined
Sep 27, 2022
Posts
15
Reaction score
19
Lemon law in my state is 3 repeat repairs for the same issue during first 12 months or 12k miles. Or 30 days in service. I’m not to that point yet and I expect them to provide a more thorough repair and explanation this time but for a brand new vehicle I don’t trust the reliability. This is my wife’s vehicle so can’t risk her randomly breaking down if I am out of town. Hopefully the dealer can work with me and get me into a different one
 

MassHoe04

Full Access Member
Joined
Nov 4, 2021
Posts
1,586
Reaction score
2,798
Location
Western MA
P.S.: I had a 93 Chevy S-10 Blazer 4 door that had an issue the dealer could not resolve after 2 attempts. They called in a regional guy from GM to come out and see what could be done. They did what he suggested the third time and was still a no-fix. When I mentioned invoking the MA state lemon law (which is an arbitration process), GM immediately offered to do a voluntary buy-back to resolve the issue with my new Blazer and make me happy again.

They paid off my loan in full, sold me another at true cost (factory invoice, not dealer invoice) and got me into a lower interest loan on the new one. I had more options than on the one GM bought back and ended up paying less per month than before!

I found out later, that because they bought the vehicle back outside the lemon law process, they could throw the Blazer back on another lot and not have to disclose anything. They could just sell to another customer and hope they never have anything resurface with the problems I was having. Once tagged as a lemon, all the problems have to be fully disclosed and the value of the vehicle drops considerably. Not many people really want to spend a lot of money for something labeled as a lemon... So, settlement outside the lemon law process before anything starts with that allows the company to resell the vehicle for full current retail or close to it.

That is how my problem was resolved. I was happy.
But, my problems were documentable and were present before and after attempts were made to fix it...
 
Last edited:

DuraYuk

Full Access Member
Joined
Sep 17, 2022
Posts
810
Reaction score
582
I would look for another authorized service shop. Someone with a brand new vehicle having their truck sit in the lot for a few days before they got around to checking what was wrong?! Doesn't seem right. They should have put someone on this right away (if not the next morning)! Clearing the code and saying it was a software glitch explains the problem away, too.

Mine is almost 20 years older than yours, so I am not up on what software can do to these things. I am aware, that the computers do almost everything now days.

But questions I would be asking:

The P0207 was a code specific to cylinder #7. If the software or computer says the readings were out of programmed parameters, then what could be triggering that condition?

The fact that you also saw traction control and front collision messages does point to possible computer or ECM problem, but I am wondering if there is any possibility there is a damaged or loose connector on the ECM or one of the main harnesses?

Maybe workers in the factory weren't all that careful during assembly and something got nicked or damaged in the process, leading to an intermittent problem.

Good luck! I hope they can get your problem resolved.
Merry Christmas
Traction and collision can turn on when other codes are present. Doesn't mean the ecm is faulty. Sheesh. Its is incredibly rare for a ecm to fail these days. You would have tons of body codes present and communication codes.

From the code he presented seems pretty easy to figure out. It's misfiring and has a injector 7 code. It's not rocket science.

To reiterate you don't have a lemon you have a crappy service department. Most issues people complain about here stem from misdiagnosing not the actual vehicle being a lemon.
 
OP
OP
BuckChevy25

BuckChevy25

TYF Newbie
Joined
Sep 27, 2022
Posts
15
Reaction score
19
Traction and collision can turn on when other codes are present. Doesn't mean the ecm is faulty. Sheesh. Its is incredibly rare for a ecm to fail these days. You would have tons of body codes present and communication codes.

From the code he presented seems pretty easy to figure out. It's misfiring and has a injector 7 code. It's not rocket science.

To reiterate you don't have a lemon you have a crappy service department. Most issues people complain about here stem from misdiagnosing not the actual vehicle being a lemon.
Any idea what that repair involves so I know what to expect? I'm obviously not a mechanic and given your background would appreciate the feedback
 

DuraYuk

Full Access Member
Joined
Sep 17, 2022
Posts
810
Reaction score
582
Any idea what that repair involves so I know what to expect? I'm obviously not a mechanic and given your background would appreciate the feedback
That code is a injector 7 circuit performance code. Either the injector is failing (likely) or the wiring to it/connector. If it's one of the v8s it is very simple and straightforward.

Stuff happens. I wouldn't put your 2 cents into it. Let them do their jobs or better yet go to another dealer. Don't try and influence the outcome they 'should' be professionals. If we had too many comebacks we could get terminated. Same with bad CSI score. Im sure the same still holds true.
 

Forum statistics

Threads
129,572
Posts
1,817,999
Members
92,806
Latest member
trappnastyy
Top