Question about GMC Cars & Trucks
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: TPS in a 1998 GMC Jimmy
the tps is ususally at the side of the throttle body opposite where the throttle cable / tv cable mount.
sometimes it won't start, run, or run erratically. there are ways of testing this unit (by output voltage) before you commit to buying a new one. to test it you will need a dvom (digital volt ohm meter).
just a note: straight from the book... "a broken or loose tps can cause intermitten burst of fuel from the injector and an unstable idle because the ecm thinks the throttle is moving."
Posted on Sep 22, 2008
Hi: Sounds to me like you tried to start the vehicle with something disconnected in the security system. If this is the case the solution is simple. Put key in ignition and turn to the on position, leave on for EXACTLY 30 minutes... then take key out, wait 5 minutes then start vehicle. Hope this helps... please rate suggestion... ty
Posted on May 21, 2009
look under the front of your blazer, just below the bumper, and you will see a little access door in the plastic guard. Open this door, and you will find your oil filter.
Posted on Dec 01, 2009
I own a Jimmy and have done quite a bit of 4 wheel drive repair on it.
The first thing i would check is the 4x4 selector switch. I know for a fact that these will throw a service 4x4 code if they are unplugged or shorted. They sell for 50-60$ or you may find one at a local salvage yard for cheaper. Taking this out and checking it only takes a few seconds, just simply pop the switch out of the dash with the edge of your pocket knife. After you get it out theres a few more tabs surrounding the back plate, and this is where the circuit board is located. I would inspect it visually to make sure nothing looks corroded and also take a sniff of it to insure there isn't a burnt smell. If it were the 4x4 actuator the lights would still illuminate on the selector switch, it just wouldn't engage the 4x4. You'r problem is all electrical trust me .
Posted on Jan 05, 2010
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