2019 6.2L stalls while driving, won't start
#1
2019 6.2L stalls while driving, won't start
I have a 2019 new body with the 6.2L. Occasionally, it decides to shut off while driving which has not been fun in rush hour Boston traffic. I need to pull over, turn everything off and restart.
Sometimes it restarts, sometimes it just hits the starter for a fraction of a second and doesn't start.
Into the dealer for diagnosis: they found some old non-communication codes and cleared them, They then changed the batteries in the remotes and reprogrammed them. I paid $450 for the new batteries and the truck stalled on the way home and then wouldn't start this morning.
Back to the dealer with a towing bill. They want to throw a new starter in - but what does a starter have to do with stalling while driving??????
Anyone with a similar problem?
Sometimes it restarts, sometimes it just hits the starter for a fraction of a second and doesn't start.
Into the dealer for diagnosis: they found some old non-communication codes and cleared them, They then changed the batteries in the remotes and reprogrammed them. I paid $450 for the new batteries and the truck stalled on the way home and then wouldn't start this morning.
Back to the dealer with a towing bill. They want to throw a new starter in - but what does a starter have to do with stalling while driving??????
Anyone with a similar problem?
#2
Help
Hey so I also have a 2019 new body 6.2 at4. My truck has never had any issues. 3 months ago I got 2 nee remotes programmed to the truck. Yesterday I was driving down a country road slowed down to turn and the truck stalled told me to shift to neutral and restart still nothing so I pulled it over tried the truck all the way off and it still won't crank. All the relays feel warm fuses by the battery are all good. Still nothing, what ended up fixing your truck?
#3
How many miles?
#4
Hey so I also have a 2019 new body 6.2 at4. My truck has never had any issues. 3 months ago I got 2 nee remotes programmed to the truck. Yesterday I was driving down a country road slowed down to turn and the truck stalled told me to shift to neutral and restart still nothing so I pulled it over tried the truck all the way off and it still won't crank. All the relays feel warm fuses by the battery are all good. Still nothing, what ended up fixing your truck?
Here is the TSB: 21-NA-149 1..30 (nhtsa.gov)
Last edited by Delazuche; September 30th, 2023 at 5:25 PM. Reason: add link
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mountainmanjoe (September 30th, 2023)
#5
I would have insisted on a full refund. known defect on a 4 year old vehicle, and dealers are supposed to know their TSBs.
#7
Thanks for letting me know about this. I tried some easy things like a battery and starter relay. Checked all fuses. I'm at a complete lose. I am gonna see if I can get it towed today.
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#8
I spent $1,100 having the dealer try to fix it. Then, I found TSB 21-NA-149 which says they installed the wire harness without a clip because it was hard to install. They used this TSB and found that I had a frayed wire which they connected and it runs fine again. I appealed to GM and they are refunding me about half of the cost I paid.
Here is the TSB: 21-NA-149 1..30 (nhtsa.gov)
Here is the TSB: 21-NA-149 1..30 (nhtsa.gov)
#9
don't go to dealerships. They'll rob you blind. Find a trusted a independent mechanic.
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Mikesdeuce (October 21st, 2023)
#10
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