Shifts find and sluggish on take off and when I turn it off and turn on again ,it does the same thing.when I shift from park to drive it feels like the transmission or rear end going to fall out.
SOURCE: Sluggish slow acceleration
Check that transmission fluid if its an automatic, should be full and clean, if manual trans clutch probably slipping
SOURCE: 1995 GMC Siera Truck Transmission
i gather its an auto transmission ,which mean your loosing oil pressure from the convertor inside the tranny housing.
SOURCE: wont shift back from 4x4 low, to 2x2
I also have a 2002 Envoy. Shifting to and from 4wh and 4wa can be done on the fly but shifting to 4wL has to be done stoped and while in neutral. Try that. Otherwise I'm afraid its a new computer for you. Its located under the left rear seat and you need a loan for one.
SOURCE: 95 GMC Sierra 4L60E will not shift down to 1st or up to 4th.
no power stuck in 3rd gear electric shop unless youve burnt it up good luck...www.TransmissionGarage.com
SOURCE: model 2000 GMC shifting problem 4l80e transmission.
did you replace the torque converter I am having the same problem and I have been told the torque converter could be bad
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