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P0641 VREF 1 low
Posted to Technical Theory Forum on 7/31/2018 29 Replies

OK, so we've got another interesting vehicle to play with. This vehicle sets a P0641 fairly consistently. Will not set in the stall, either brake-torqueing or otherwise. Will idle all day, without setting any codes. Sometimes it will set the P0641 just backing... Login to read more.

29 Replies Received (View Replies)

 

car Vehicle Data

2009 Chevrolet Tahoe LT 5.3L

Engine5.3 L
Trans6-speed Automatic (Electronic)

car Vehicle Data

2009 Chevrolet Tahoe LT 5.3L

Engine5.3 L
Trans6-speed Automatic (Electronic)