2020 6.2 L GMC Sierra 1500 starts then turns off P12A6

[KennyMcCormick18]

Yesterday my truck would turn over start and the engine would instantly stop. I had just drove it and was running fine 30 mins before this. After about 6 attempts it started with check engine light on. Drives fine with no issues. When I got the error code checked it shows P12A6 fuel pump driver control module circuit performance. My dealer says they are behind and won't be able to look at it for 2 weeks. Anyone have this issue before and know what's going on? 

[Sjwoei]

https://static.nhtsa.gov/odi/tsbs/2020/MC-10178394-9999.pdf
sounds like same issue

[redwngr]

On 9/18/2021 at 12:46 PM, KennyMcCormick18 said:

Yesterday my truck would turn over start and the engine would instantly stop. I had just drove it and was running fine 30 mins before this. After about 6 attempts it started with check engine light on. Drives fine with no issues. When I got the error code checked it shows P12A6 fuel pump driver control module circuit performance. My dealer says they are behind and won't be able to look at it for 2 weeks. Anyone have this issue before and know what's going on? 

 

Any update?

 

Did they find a half hour to swap the module?

[KennyMcCormick18]

They haven't. Check light went off same day. Not had anymore problems with it so I'm hoping it'll make it a while ago they can get the backlog taken care of and maybe the new mechanics a little experience. The majority quit plus part shortage is what's for them backed up. I'll post once I can have them look at it.