bent valve Bent valve in 2025 GMC Canyon Denali - Requires engine swap at 14K miles

William Aldrich · Monday at 12:10 PM

I have a 2025 GMC Canyon Denali. On a trip recently the engine failed. The dealership diagnosed a bent valve and says there is a service bulletin that indicates to 'relace the engine'. The truck only has about 14K miles and is under warranty. The failure occurred 5/11/2026. So far I have worked with GM Customer Assistance and Roadside Assistance. Evidently no engines are available and nobody will offer a date when a new one will be. Coming up on two months with no repair or timeline and no loaner from the dealership. GMC Customer Assistance is 'ghosting' me and keeps closing the cases I've opened with no resolution.

Hoping someone can help me on how to escalate this issue.

newdude · Monday at 01:11 PM

1 hour ago, William Aldrich said:

I have a 2025 GMC Canyon Denali. On a trip recently the engine failed. The dealership diagnosed a bent valve and says there is a service bulletin that indicates to 'relace the engine'. The truck only has about 14K miles and is under warranty. The failure occurred 5/11/2026. So far I have worked with GM Customer Assistance and Roadside Assistance. Evidently no engines are available and nobody will offer a date when a new one will be. Coming up on two months with no repair or timeline and no loaner from the dealership. GMC Customer Assistance is 'ghosting' me and keeps closing the cases I've opened with no resolution.

Hoping someone can help me on how to escalate this issue.

No ETA is available for that engine at the moment in the GM system.

I would start at the dealer. Try and talk to the parts manager or service manager and see if they can start a CX Connect case and get an ETA from GM on when engines may be available. If they just check Parts Workbench and say "no eta", they aren't trying hard enough. They need to do a CX Connect and chat with DPAC to find the ETA.

Edited Monday at 01:11 PM by newdude

Coastie05 · Monday at 01:43 PM

How long does it have to be in the shop before you can lemon law it? It’s absolutely unacceptable that it’s been in the shop for 2 months and they haven’t even provided a loaner car.

Coastie05 · Monday at 01:44 PM

How long does it have to be in the shop before you can lemon law it? It’s absolutely unacceptable that it’s been in the shop for 2 months and they haven’t even provided a loaner car.

The warranty is not working if they can’t fix the vehicle in a timely manner.

davester · Tuesday at 03:31 AM

Lemon law depends on where the truck was bought and/or where it's registered, as the laws vary quite a bit across different jurisdictions in the US.

William Aldrich · Tuesday at 02:00 PM

On 6/29/2026 at 9:11 AM, newdude said:

No ETA is available for that engine at the moment in the GM system.

I would start at the dealer. Try and talk to the parts manager or service manager and see if they can start a CX Connect case and get an ETA from GM on when engines may be available. If they just check Parts Workbench and say "no eta", they aren't trying hard enough. They need to do a CX Connect and chat with DPAC to find the ETA.

NewDude,

thank you for the suggestions! I did follow up and the dealer indicates he has an open CX case and is working with DPAC (Dealer Parts Assistance Center). Per the dealer, GM has had a quality spill and is not providing an update for when a replacement engine will be available.