1990 GMC S15 Jimmy Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 GMC S15 Jimmy

1990 GMC S15 Jimmy Problems

Electrical Contacts in the Ignition Switch May Fail

The electrical contacts in the ignition switch may fail and result in erratic instrument panel gauge operation or illumination of the Check Engine Light. A failed ignition switch will require replacement.

Heater Core Under Right Side of Dashboard May Leak Engine Coolant

The heater core under the right side of the dashboard may leak engine coolant which can puddle on the passenger front floor. The loss of coolant may cause an engine overheating condition. Our technicians tell us that removal of the dash board is necessary to replace the heater on these vehicles.

Transmission Output Seal May Leak Fluid

The transmission output shaft seal may leak transmission fluid. On 2WD models, this leak can cause the transmission mount to become oil soaked, which will require replacement of the mount along with the leak repair. On 4WD models, if this seal leaks, the fluid will leak into the transfer case, causing it to become overfull.

See More Problems (12)

1990 GMC S15 Jimmy Questions

Why does my 85 Jimmie turn over but wont Start? (1 answer)

We replaced wires and plugs already. It showed no warning b4 it died. Just didn't start back up one day.

cruise control inoperative (3 answers)

Checked fuse, i am getting continuity up through the push button on turn signal lever, replaced small black box under dash, left of steering colmn. i have great vacuum to throttle actuator. please help!

cruise control problem (1 answer)

I foud a 3 wire black sleeved cablr coming from the cruise/wiper/turn sign. switch on the column that has a receptacle i dont reconize,I had a s15 before that I replaced the column in from a truck with cruise but mine didn't have it so I didn't worry about it.This truck is original & ...

See More Questions (13)

1990 GMC S15 Jimmy Reviews

good car lasted over 10 years with 190000 miles on it

See More Reviews (1)