[CanonMax]

Well seeing as they now have a fix for this problem the video is a little late!

 

[Dirk13]

Well seeing as they now have a fix for this problem the video is a little late!

What’s the fix?

 

[CanonMax]

What’s the fix?

A shim on the Camshaft position sensor, they are saying the air gap is to big for the sensor to read at times. No clue if it fixes it but that’s what they are doing now. Not very invasive, 3 hour repair.

 

[HCO41]

Has anyone heard if there's going to be a recall and what models/engines are effected?

 

[CanonMax]

Has anyone heard if there's going to be a recall and what models/engines are effected?

it’s not a recall. If you experience the problem the dealership has access to the bulletin for the repair. It appears to affect everything that has the 3.0 in it but affects 2021’s more than 2020’s.

 

[dirtymainer]

it’s not a recall. If you experience the problem the dealership has access to the bulletin for the repair. It appears to affect everything that has the 3.0 in it but affects 2021’s more than 2020’s.

If it's a physical fix (shim) then why would it only impact mostly 2021's? They had to have changed something..

 

[CanonMax]

Hell if I know, I’m not the engineer. They released this bulletin last week.

 

[mjdwyer23]

2021 Silverado owner here, failure to start 3x in a few days at only 800 miles. Calling the dealer first thing tomorrow. Exceptional truck otherwise, except the plastic filled interior!

 

[Gtxtac]

What's the number of the technical bulletin. I've had about 15 no starts and only 2700 miles. I've resisted the pull cab bulletin. Love to bring this new number to them.

 

[jay p]

What's the number of the technical bulletin. I've had about 15 no starts and only 2700 miles. I've resisted the pull cab bulletin. Love to bring this new number to them.

PIP5806B

 

[moobaru]

Just had my second long crank no start , first one was at about 230 miles, this one was at 5690 miles. Second one I had run into a store for about 15-20 min like others have reported. But I had done this several times before with no issue.

 

[SDunlapTruck]

Joining in the....fun? No not really VERY FRUSTRATING! I have had the no start issue 4 times now. The first time was with 12 miles on the truck the day AFTER I bought it. Has anyone else looked at the stereo settings? On top of the no start issue, my stereo setting reset 95% of the time. Meaning the bass and what not go back to 0. Just wanted to throw that out there if it is really a "computer" issue.. I'm with you all, really hoping they find a fix for our trucks!

 

[SDunlapTruck]

Also this screen displays each time after this happens, anyone else notice this? Not even sure if this is a thing, but figured id mention it. View attachment 1088080

What about your radio settings? Do they rest as well? Mine does!

 

[jbramble24]

New guy here. Similar to previous posts. 2021 Sierra CC. Have had the truck since June 2 and have had the crank, no start issue twice. The first was around 1200 miles and I just brushed it off as strange. Second one over the weekend around 3200 miles. It seems to happen when the engine is hot and gets shut off for 15-20 minutes. It cranks for 20+ seconds and then starts right up on the 2nd try. Sure feels electronic/computer. I'm not going to the dealer until there is a solution.

 

[Dan81]

Same thing just happened to me. Truck tried starting for 10 seconds. Next try fired up no problem.

 

[Angry Beaver]

it’s not a recall. If you experience the problem the dealership has access to the bulletin for the repair. It appears to affect everything that has the 3.0 in it but affects 2021’s more than 2020’s.

What is the service bulletin number?

Edit: Nevermind. I see it a few posts after yours.

 

[Angry Beaver]

A shim on the Camshaft position sensor, they are saying the air gap is to big for the sensor to read at times. No clue if it fixes it but that’s what they are doing now. Not very invasive, 3 hour repair.

From the bulletin, it's basically the opposite problem of the original bent wheel repair. Instead of the wheel being bent in, it's actually too far out and needs a shim. The same labor is required.

 

[Dirk13]

From the bulletin, it's basically the opposite problem of the original bent wheel repair. Instead of the wheel being bent in, it's actually too far out and needs a shim. The same labor is required. View attachment 1091141

Not seeing where the same labor is required to install the shim as replace the exciter wheel. It appears the shim is something installed on the sensor to bring it closer to the wheel. Not necessary to pull the cab in that case.

 

[Angry Beaver]

Not seeing where the same labor is required to install the shim as replace the exciter wheel. It appears the shim is something installed on the sensor to bring it closer to the wheel. Not necessary to pull the cab in that case.

Ah, I read it as the shim being on the wheel itself.

 

[CrazyCowboy]

I'm glad to see GM has been working on this. I'll wait to see long term results on the latest bulletin.