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GMC
Sonoma
Drivetrain
Transmission
Overdrive
Overdrive not working properly
1996 GMC SONOMA
135,000 MILES • 4.3L • 6 CYL • 4WD • AUTOMATIC
P.J.WALKER
MEMBER
1 POST
First, second, third shift perfect. No overdrive. It does not slip at overdrive range or rev up at overdrive range. It just hold steady in third.
Nov 1, 2018 at 9:30 PM
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STRAILER
✓
Experienced Mechanic
55,649 POSTS
It sounds like a shift solenoid has gone out. I would remove the 2-3 and 3-2 to test and make sure they are working, here is a diagram below.
Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Cheers, Ken
Image (Click to enlarge)
Nov 4, 2018 at 3:07 AM
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