Engine RPMs Bouncing

Monkey · 2020-08-23T19:37:49+0000

If you have one it is plugged into the OBD connection point under the dash you will see it readily enough but must have been added by someone else unless you are the original owner.

By Monkey
August 23, 2020 in Engines & Drivetrain (V8, Duramax, TurboMax)

https://www.gm-trucks.com/forums/topic/242413-engine-rpms-bouncing/

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