ssandefur

I have the same issue- bought a 2022 GMC Sierra 1500 AT4 on 6/11/2022. Truck wasn't running right, felt a stutter or shudder under light load. Have had a few instances of lights on dashboard going off. Took the truck to dealership on 6/20/2022 and diagnosed with a bad fuel injector on #6 cylinder. Ordered part on same day, backordered, and still waiting today 8/4/2022 and still no ETA on when the dealer will receive the part. On dealers advice I am still driving the truck but its so annoying I don't enjoy it. I have called dealerships all over the country looking for this part and found a few that have them however they were ordered for a customer, can't sell. I would love to know the reason for the backorder and a realistic time table for GM to get the parts out. Would appreciate any comments anyone has relative to this matter.

Update- dealer said they found a bad fuel injector. Ordered part #12726901. Part is on backorder. I’ve been waiting a month now and still no ETA from dealer.

I bought a 2022 Sierra 1500 AT4 last week and having similar issues. A shudder or studder under light load and relatively low speeds. It gave me a notification to have traction control and ESC serviced. Went and spoke with service department at dealership this morning and they hadn't seen any similar complaints. Taking it in next week for service to investigate.