I have a 2005 Chevrolet Trailblazer with the 6 cylinder engine and 4L60E tranny. On way home from a trip the transmission would not shift into 4th gear (overdrive). 1-3 gears shift fine. No engine codes being displayed. Changed fluid and found no metal. Took to a local transmission shop and they are stumped. Shop advised that when they hooked up to the computer they advised they can see where the computer is sending the command to shift into 4th gear, but it's not happening. He advised if it was a clutch pack problem it would "neutral" out when given the command to shift into 4th, but the truck just stays in 3rd. Tranny shop is leaning towards computer or electrical, but still unknown. Any ideas?
have the same problem?
Friday, March 16th, 2012 AT 7:02 PM