Having problems with your 1995 GMC Jimmy ?

My 1995 GMC Jimmy hesitates when shifting out of first gear. You have to get the enhine to appx 3000 rms and then back off before it will shift. I assume it is a shifter solenoid but how do you replace it? Can I do it myself? I am am adequate parts changer but not a mechanic by any means.

Posted / edited by AnonymousUser on : 23-09-2019

Answers :

My jimmy , we just put 2 new solenid in it, but we still don't have overdrive?
Inspect the wire leads to your TPS (Throttle Position Sensor) or replace your TPS. The TPS is located on the throttle body-follow the accelrator cable where it meets up with the TB its right there, you'll see two lead wires connected to it. \015\012
\015\012The TPS sends signals to the ECM and the ECM will command when to shift the transmission through out the RPM range. The other thing to if that did not fix the problem, your boost valve in your transmission may be weak and needs to be replaced or the EPC valve may be dirty or faulty can will need to be replaced. Both Boost Valve and EPC are easy fix when the transmission pan is dropped and takes about an extra 10 min to replace both. \015\012
\015\012Start with the simple, CheckThrottlePosition Sensor (TPS).for smooth and linear electrical response over the entire range of motion.Or just replace the ThrottlePosition Sensor ThrottlePosition Sensor (TPS).\015\012
\015\012Poor line pressure rise due to leaking boost valve, clogged Electronic Pressure Control (EPC filter screen, failing Electronic Pressure Control (EPC solenoid, or worst case leaky seals throughout the Transmission. \015\012
\015\012Good luck and keep me posted, most likely it's going to be your TPS and check the transmission fluid for level and condition. \015\012
Repair Help & Product Troubleshooting for 1995 GMC Jimmy

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