1999 GMC Jimmy Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1999 GMC Jimmy

1999 GMC Jimmy Problems

ABS Light Due to Brake System Control Unit Failure

The Anti-lock brake system (ABS) control unit may fail internally causing the ABS warning light to illuminate.

Replace Fuel Filter Every 30,000 to Prevent Fuel Pump Failure

The fuel pump may fail causing the engine to stall and not restart. Our technicians recommend replacing the fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.

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.

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1999 GMC Jimmy Questions

99' JIMMY 4.3 My 4wd was serviced and HAD FRONT DIFF. AND TRANSFER CASE REPLACED. now the service4x4, light is lot up full-time and 4 button selector , has no lights at all, EVER! (1 answer)

Just put speed sensors in transfer case, already . it went in for probs. W/ Jimmy not selecting w/ 4wd or2wd ID like
Then it would self cancel and after a while of clicking , would shut down and service 4wd would light up on dashboard

What's the Possible causes of a gas gauge pegged Below E' ,even after installing a fuel pump. 99' 4.3 vortex 4x4 jimmy.the truck is bucking and stalls occasionally at a stop... Is there a circuit shorting out ? (1 answer)

Just did full tune up . gas gauge hasn't worked for a year. Issue w/ bucking and nearly stalling,was mostly eliminated. But was the root cause , of my fuel pump exchange. Still no gauge . did coil.tps as well
Pimp pressure of old pump was holding near 50 psi. Borderline I thought..any volt ...

What are the probable fuel leaking problems? (1 answer)

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1999 GMC Jimmy Reviews

My friend bought a 1999 Gmc Jimmy on a good buy ..She bought it in March 2014 since then we had to replace spiders for the fuel injectors,converter,ball joints, tires seem to leak was told cause they are aluminum .Not only that gas milage 13 to 16 when we were told it should get 17 to 22.body is in nice shape.but the truck is starting to be a nightmare,..
got my jimmy in march had some problems with 4 x4 replaced the 4x4 computer moduel located inside by passange door had no problems mine also tends to rock had to replace front end n shocks other than that ita a good buy
I have a 99 GMC Jimmy and it has been great. I carry a ton of sports gear in the back at all times. It tends to rock rather bad when I am driving on the interstate, but that is probably just the suspension from all the gear. The only big problem I have had is the 4x4 electrical buttons are all on and my 4x4 no longer works which is a bummer and my Jimmy acts like it wants to switch into 4x4 som...

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