JW2024

I have a 2024 Sierra 2500 AT4X. I just did a tire rotation and included my spare in the rotation. It’s now in the back right position. Once I got moving, 3 tires showed up but 4th tire is blank. I adjusted the tire pressures all the way around according to the sticker in the door jamb, 65 in the front and 55 in the back. The display shows the 65 tires are in the back and 1 55 tire in the front. The front left shows nothing still. I bought a relearn tool and get the horn honk on FL and FR. When I get to the BR nothing happens and the process times out. Does the full spare come with a TPMS sensor? The wheel and tire combo is the exact same as the other 4.

Go to a different dealer. That’s way too much. I had to go to 2 different dealers to get this done. The first had my truck for 2 days and said they could not get the truck to accept the program. They quoted $260 to do to. No charge since it was not completed. The second dealer had my truck for about 3 hours and done. Charged $250.

Disregard

Just back from the second dealer. They were able to get the Fast Idle programmed. Took about 3 hours from my arrival to departure.

The tech did have the bulletin. I emailed it to the service advisor and he printed it out for the tech. Higher speed for accessories. I know about the enhanced heating setting for winter and it works great. I did call another dealer today and the first advisor they connected me to had no idea what fast idle was. He got a “senior” advisor. The then went to ask their diesel mechanic. The mechanic said they could do it and told him the steps in the bulletin. At least it sounds like he knows what to do. I have an appointment next week to get it done.

Thanks JR. The service advisor said the tech had assistance from TechLine. Said the remotely connected in to their computer to try to help but no luck. I did have to pick up my truck because I needed it. Maybe more days there would have helped. I have tried to activate it but no luck.

I have a 2024 Sierra 2500 AT4X with the Duramax. I would like the high idle feature installed. I know it’s dealer programmed and I called several in the area that had no idea what I was talking about. I found a dealer locally that had my truck for 2 days and said the truck would not take the program. Anyone have any suggestions? I live in Fort Worth, TX.