Question about 2008 GMC Envoy
The transmission takes about a mile to shift gears.I was told it has to warm up but even after it warms up and I stop and shut it off for five min it does it again
Get filter changed is always your first fix with shifting problems in a automatic transmission . They wont tell ya that but it usually is the problem or a shifting solenoid that can be replaced at same time..
Posted on Mar 03, 2016
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Posted on Jan 02, 2017
SOURCE: 1993 GMC 1500 4x4 poor shifting
this may be due to a poor connection at the vehicle speed sensor on the transmission, pull the connector off the sensor and clean it with contact cleaner, if the problem persists replace the speed sensor. there are 2 diff ones here is a picture of the most common one for an auto trans.
Posted on Mar 26, 2009
Try changing the transmission fluid and transmission fluid filter. It is a fairly easy but kind of messy job. Just buy the new fluid and filter, Grab your metric socket set and go at it. NEVER WORK UNDERNEATH A HOT VEHICLE. You have to pull the transmission pan to do this job. When you break the gasket seal several quarts (liters) of transmission fluid will cascade down on you. Be ready for it. Don't forget that when it stops draining there is still a lot of fluid left in the pan. When you finish cleaning up the fluid clean the gunk out of the pan. Install the new filter and reinstall the pan with a new gasket. Do not over torque the pan or filter bolts. If you strip them out or break them off you will need professional help to repair it. Refill the transmission with fluid. It should take six or seven liters.
Posted on Mar 20, 2010
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