20 Most Recent 1996 GMC Jimmy - Page 2 Questions & Answers

96 had two types of retaining set ups --open hood and behind lens are two locking tabs that has elongated slot with a hole the pin in the elongated slot is what holds light in place [[retaining pin]]pull up till pin is lined up with hole on both and lens falls out so keep a hold of it ----or you have the 2 long skinny bolts down to the lens unscrew them and pull lens forward from truck remove connector and to remove bulb push in and turn 1/4 counterclockwise put in new and and done the following link showes the screw type 96 jimmy headlight Yahoo Video Search Results

The fuel pressure regulator is mounted inside the intake plenum. You'll have to take the top half of the intake plenum off and replace the fuel injection spider.

you could have intake leak.also intake leak at injector o rings or seals leak.when replacing intake gasket you have to tighten in sequence.if not intake gasket will leak again.

Had the same problem with it not shifting passed second and slipping in and out. one of the PCM modules (there are 2) isn't grounding properly. gmc dealer jumped a wire from the properly grounded PCM module to the un-grounded one. problem solved. this after i spent money on a re-manufactured tranny at there suggestion. But i got my money back because there exists a technical service bulletin on this issue and i complained to them that they should have known about it beforehand, so i got a re-manned tranny with warranty for free, not bad, thanks GM. Jimmy's still running....

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PCV valve isn't likely to change your oil pressure at all. All it does is vent the crankcase to your intake. I don't know your engine, but some have both a "sending switch" and a "sensor" for oil. One for the light, one for that gauge. You could also have a bad wire from sensing switch to gauge.

If factory alarm, lock drivers door with key, wait an hour should automatically reset, if it's a factory alarm and you have no keypad. Try removing the fuse for the alarm and wait a few minutes and replace fuse and see if it will reset the alarm.If its an aftermarket alarm system, look under plastic panel below steering wheel for a plastic black box that is about the size of a deck of cards, izip tied or just hanging with a plugin with several different colored wires and unplug it. That will shutdown an aftermarket alarm and vehicle should crank

Camshaft position sensor is on the front engine cover at the bottom near the crankshaft. Oil pressure sensor/switch is at the back of the engine below and to the left side of the distributor.

you can unplug the command starter it is under the dash

the refrigerant must have leaked out. the leak should be found and sealed. sometimes the shrader valve in the service port will not get pressed and opened by the service fitting. either the service fitting tool needs adjustment or loosen the shrader valve just enough for refrigerant to transfer. by all means, avoid any air from entering the system, virgin refrigerant is of the esense

The knocking or ticking is going to determine if it is in the top end, lifters, push-rod or rocker arm issue or the bottom end that would include pistons or bearings.
If it is a ticking noise, it will more than likely be a valve train issue.
If a knocking noise, piston or crankshaft related problem.

Attached is a web site that you can listen to a piston slap which is a known issue for your 4.3.
Listen to the noise and see if it sounds similar to your problem. A piston slap will generally sound as though it is coming from the central area of the engine.
Listen to the recording and let me know.
Regards,

Check coolant level first. It may be a clogged heater core. Feel the two hoses coming out of the firewall, both should be hot when up to engine temperature. If one hose is cold, your core is clogged. Unhook both hoses from engine, hook a garden hose in one hose and blow out the clog, pretty messy and gunky.

Well, as you know this could be almost anything. I suggest that you check the harmonic balancer. Most internal parts would not stop knocking.....

Very carefully.....?

It could be Clutches and Bands. Do you have over-sized Tires and Wheels?

Run to the fuse box after ignition

Could be timing . Slipping timing , Cracked manifold or gasket .

Oh yea, lifters can be replaced , best if you replace cam an lifters together ! Loud knocking is not usually associated with lifters , they usually make a ticking noise ! Knocking noise is most usually in the bottom of the motor , main or rod bearings . most of the time rod bearings !

Did the old transmission do the same thing? Could be the control module or bad wiring. Could be you got another bad transmission.