Sounds like a bad solenoid to me, but I would check the transmission fluid level first. Check the transmission fluid while the engine is running, in park. If low, add 1/4 of a quart at a time, cycle through the gears, pausing for 10-30 seconds per gear, then check again. If the transmission fluid is not low, I would suggest taking it to a qualified shop in your area.
my transmission seems to get stuck in gear and doesn't shift out of second gear,RPM is high
2004 GMC Envoy 4 Dr SLT 4WD SUV
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Maintenance & Repair
Just put a used transmission in my 2002 envoy and the shifter moves but the truck won't go anywhere what could be the problem ?
2002 GMC Envoy
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Maintenance & Repair
What transmission oil do I put in my 2005 GMC envoy 4wd
2005 GMC Envoy 4 Dr SLT 4WD SUV
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Maintenance & Repair
I have GMC Envoy 2007 with 70000 KM. What is happening now when I start the car in the morning I see Engine light. Car is getting very heavy in driving. When I go to highway It's not changing to gear ...
2007 GMC Envoy SLE-2 4 Dr SUV
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Maintenance & Repair
Can a 2000 Envoy transmission work in A 2002 trailblazer
GMC Envoy
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Maintenance & Repair
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