A lemon saga - 2024 GMC Sierra 1500 2.7L

OVERKILL

$100 Site Donor 2021
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Ontario, Canada
Lady I know, used to work for my Jeep dealer, bought at the beginning of August a 2024 GMC Sierra 1500 with the 2.7L turbo. Brand new off the lot, 0 kilometers on it. I've asked her if I could share her story here and she was OK with it. She sold her 2014 Dodge Caravan when she bought the GMC.

Nice looking truck, silver with black appointments:
1767048352922.webp


Since purchasing the truck, October is the only month where she had the vehicle for the full month.

- First issue, truck wouldn't start. Flatbed to the dealer who said it was an OnStar update that killed the battery.
- Second issue, driver-side headlight LED ring was flashing non-stop and wouldn't cease. Headlight assembly needed to be replaced, no ETA on parts, GM had none.
- Third issue, another no-start condition. Flatbed again to the dealer, replaced battery and performed BCM update.
- Fourth issue, Christmas eve, driving along, loud "bang" was experienced. Truck went into limp mode, engine light was on. Apparently needs a valve body and/or TCM.

She has been in a rental ranging from 5-12 days every time. Four months, four issues. She's currently decided that she's going to fight for a replacement vehicle as she has no faith left in this one.

I'm pretty surprised by her experience, though as we know, everyone makes the odd lemon now and then. I'm hoping she'll be successful in getting herself into something else, and hope she has a dealership willing to go to bat for her to make that happen.
 
Lady I know, used to work for my Jeep dealer, bought at the beginning of August a 2024 GMC Sierra 1500 with the 2.7L turbo. Brand new off the lot, 0 kilometers on it. I've asked her if I could share her story here and she was OK with it. She sold her 2014 Dodge Caravan when she bought the GMC.

Hmmm...I wonder why it sat on the dealer lot for over a year?
 
Quite a variety there. Does it have to be the same issue multiple times for lemon/buyback or is it just total time of being back to the dealer for the manufacturer issues?
Are all covered by warranty? Are all the control modules hardware or software programming related issues?
 
Quite a variety there. Does it have to be the same issue multiple times for lemon/buyback or is it just total time of being back to the dealer for the manufacturer issues?
Are all covered by warranty? Are all the control modules hardware or software programming related issues?
We don't have a formal lemon law in Ontario:
https://ised-isde.canada.ca/site/of...ing-big-ticket-items/recourse-vehicle-defects

A good dealer would make you whole in this situation, but I have no experience with the dealer she is using, so while I am hopeful they will help her out, I'm not familiar enough with them to know this to be the case.

Yes, this would all be covered by warranty, given the truck is 4 months old. It seems that this is a combination of both hardware and software issues.
 
Hmmm...I wonder why it sat on the dealer lot for over a year?
I would never buy another new car again that has sat on the lot for a long time, no matter how good the deal. In January of 96 I bought a brand new 1995 Trans Am and it was originally built in September 1994 so it sat on the lot for well over a year. There were actually two identical Trans Ams on that lot and the other one had a dead battery so I bought the one that actually started 😆 But from the moment I drove out of the dealership it had its first problem and I returned to the dealer at least 20 times in the first 16 months with many issues. Cars that sit around for too long are usually more problematic than ones that get driven frequently
 
I know three people with new chebies- all are bitching about something, I'm keeping my 19 5.3 as long as possible. I don't understand that 2.7- all get terrible fuel mileage.
For what they are- a truck, gm is just putting layer upon layer of unreliability.
 
A 2.7 turbo or duel turbo in a full size truck is asking a lot from that engine. Probably why it sat. Many tuck guys would look at that and say no way.
Though I think the GM and Ford 2.7 have proven quite good. As long as the engines are built robustly and well maintained, pressurizing shouldn't be an issue. And fewer parts is less to break and maintain. How are those large naturally aspirated 6.2L doing?
 
Though I think the GM and Ford 2.7 have proven quite good. As long as the engines are built robustly and well maintained, pressurizing shouldn't be an issue. And fewer parts is less to break and maintain. How are those large naturally aspirated 6.2L doing?
The 2.7L could have easily gone down the 6.2L road.
 
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