P1626 Starts and stalls?

Tiny
EARL91
  • MEMBER
  • 2000 CHEVROLET TAHOE
  • 5.7L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 180,000 MILES
P1626 code. Starts and stalls. Need help. Please help now throwing a p1626 code.
Friday, January 27th, 2023 AT 11:59 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Code P1626 is the theft deterrent fuel enable signal not received. When you try to crank the engine over is the security light flashing? If so use the remote to lock and unlock the car this should reset the system, if not you can try a hard reboot which is done by removing the negative side of the battery, with the cable loose from the negative side of the battery, hold it to the positive terminal for 1 minute this will discharge the memory capacitors in the BCM and PCM allowing the system to reboot.

Also, this guide can help:

https://www.2carpros.com/articles/how-to-reset-a-security-system

Please go over this guide and report back.
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Sunday, January 29th, 2023 AT 5:30 PM

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