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Hello!

timw128

New Member
Messages
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Location
Michigan
Hi- New to Truck Stop. Have a 1994 GMC C1500 2WD 5.7 whose 4L60E is acting up.
Fairly sure it's a grounding issue, or no power to trans due to ignition switch (common anomaly). DTC 66, 67, 81, 82 all at once. Extremely hard to believe all solenoids would fail at same time.
Need ground locations for this vehicle- have been poking around with multi meter and somethings not right.
Please, if there's a sticky on these matters, let me know.
Thanks a bunch!... see ya in the forum.
tim
 
Welcome.
I can’t remember exactly where, sorry. I do remember problems with thr connector itself on the trans going bad and creating issues occasionally. I believe the ground is carried through the engine harness. That harness has grounding under the dash and by the passenger fender electronics, then ground wires on the engine.
 
I am moving engine fuse box inside on my 97 express 5.0 , fiddling with finiky fuses in 15 degree temp is why.
 
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