2001 Gmc Sierra C3 Transmission Problem
seth438
04-03-2006, 04:45 PM
I own a 2001 GMC SIERRA C-3, same as YUKON denali motor and tranny, i would say in the last 6 months i have noticed that on my typical drive home the truck just isn't down shifting, normally it was fantastic to always be in a nice power range and never hesitate to down shift while passing or even slightly speeding up, now i get on the highway and even excellerating from 35 mph it won't downshift i have to use the selector and put it it into 2nd and shift back into drive, it seems very lazy to react, if i put it to the floor it sometimes down shifts, is there maybe an update on programming the tranny to be more precesise.
Vortec 6.0 L VIN #11209158
Vortec 6.0 L VIN #11209158
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