20 Most Recent 1996 GMC Yukon - Page 3 Questions & Answers

try checking the hydraulic pushrod under the front of the truck it may be bent..

either nthe front is out of alignment some or out of balance or the shock is bad up there..look at steering linkages also.. any play is not good..

there's a couple of things it could be going on broken wire wet cap and rotor loose coil wire bad fuel pump clogged fuel filter really need more info like what are your fuel.trims any codes what does the battery volts

First I would check the plug wire from the coil to the distributor. Distributor rotors can fail, some have a resistor. Does it have breaker points? Most motors use electronic sensors, which can fail, too.

the out action will be spring loaded and the in action may be vacuum operation. Run the engine and see it the pressure changes.

Usally located in the fuse box under the hood on driver side.

the fuel filter is located under truck on left frame around middle of truck

I am having the same problem. It only does it at higher speeds & sometimes not at all. I had a front wheel bearing assembly done, 2 rear tires, differential fluid redone & it still does it. HELP?

The best way to determine where noises are coming from is to use what are called chassis ears. They are basically microphones that clamp to suspect components and are connected to a switch with headphones so that you can listen to specific components. http://www.tooldiscounter.com/ItemDisplay.cfm?lookup=STE6600&source=froogle&kw=STE6600 You can spend a ton of money replacing parts until noises go away. Hope this helps.

Replay the blower resistor. Used to be you could replace the relay, but they are built into the resistor now. Should be under the passenger side dash. Usually behind the blower. There will be four to six small wires going to it and two big wires coming from it going to the blower motor.

Do you have power and ground at the fuel pump in the tank ?

You deffenatly have something shorting in the electrical system. You will need a volt meter set to 20 volts DC disconnect the negitive battery cable from the battery. Hook the rad lead from the meter to the red post on the battery with the cable attached and the black lead ot a good engine ground like the block. If you get a voltage reading then there is a short that is drawing the battery down. You say it takes 2 to 3 days before you can't start so it must be something that dosn't draw a lot of currant like a tail light something minor. Start unpluging fuses one at a time when the short goes away you will know what circuit-s to look at. Then you have to start checking these systems use the meter check for good grounds things that arn't working or arn't working the way they should wires that have broken off fixtures or switches if things have a burnt smell to them. It could be anywhere but it is lower voltage and use common sence you should be able to find it and save a lot of money auto electric places charge a lot for this kind of repair and you likely won't need to buy any parts good luck

• REPLACEMENT

Fuse Block and Convenience Center

Print See Figures 1 through 5 For 1988-93 models, refer to the wiring diagrams for fuse application and amperage ratings. Fuses protect all the major electrical systems in the car. In case of an electrical overload, the fuse melts, breaking the circuit and stopping the flow of electricity. The fuse block on most models covered by this section is located under the instrument panel to the left of the steering column. The fuse block should be visible from underneath the steering column, near the pedal bracket.

Fig. Fig. 1: Some models may use an underhood fuse/relay panel If the panel is not visible, check for a removable compartment door or trim panel which may used on later models to hide the block. This panel is usually located on the left end of the instrument panel. The convenience center is located just below the instrument panel on the drivers side. It contains individual relays such as the seat belt and ignition key alarm, and flasher. On newer model vehicles there is an underhood fuse/relay center contains both mini and maxi fuses, as well as some relays. If a fuse blows, the cause should be investigated and corrected before the installation of a new fuse. This, however, is easier to say than to do. Because each fuse protects a limited number of components, your job is narrowed down somewhat. Begin your investigation by looking for obvious fraying, loose connections, breaks in insulation, etc. Use the techniques outlined at the beginning of this section. Electrical problems are almost always a real headache to solve, but if you are patient and persistent, and approach the problem logically (that is, don't start replacing electrical components randomly), you will eventually find the solution. Each fuse block uses miniature fuses (normally plug-in blade terminal-type for these vehicles) which are designed for increased circuit protection and greater reliability. The compact plug-in or blade terminal design allows for fingertip removal and replacement. Although most fuses are interchangeable in size, the amperage values are not. Should you install a fuse with too high a value, damaging current could be allowed to destroy the component you were attempting to protect by using a fuse in the first place. The plug-in type fuses have a volt number molded on them and are color coded for easy identification. Be sure to only replace a fuse with the proper amperage rated substitute.

Fig. Fig. 2: Fuse panel cover-1991 model shown

Fig. Fig. 3: The fuse panel cover is located at the drivers side of the instrument panel. Remove the panel to access the fuses-1996-98 models shown

Fig. Fig. 4: Fuse application and amperage ratings-1994-98 models. Refer to the wiring diagrams for 1988-93 models

Fig. Fig. 5: Underhood fuse/relay panel applications and ratings A blown fuse can easily be checked by visual inspection or by continuity checking. A special heavy duty turn signal flasher is required to properly operate the turn signals when a trailer's lights are connected to the system.

REPLACEMENT

1. Locate the fuse for the circuit in question.

When replacing the fuse, DO NOT use one with a higher amperage rating.

1. Check the fuse by pulling it from the fuse block and observing the element. If it is broken, install a replacement fuse the same amperage rating. If the fuse blows again, check the circuit for a short to ground or faulty device in the circuit protected by the fuse.
2. Continuity can also be checked with the fuse installed in the fuse block with the use of a test light connected across the 2 test points on the end of the fuse. If the test light lights, replace the fuse. Check the circuit for a short to ground or faulty device in the circuit protected by the fuse.

Thats what i would try and if that dont help, maybe check the connections at the starter.

Remove the rear light housings on the back of your GMC Yukon.There should be several light bulb sockets located on the back side of each housing. Grasp each of the sockets, and turn them counterclockwise, while pulling outward to access the bulb. After removing each bulb socket, check to see if the filaments inside the bulbs are broken, indicating a shot bulb. Also, you may check to see if the wiring harness attached to each bulb socket is not loose, or show any sign of corrosion, plus, check the condition of the wiring itself for cuts, abrasions, and missing insulation, which will need to be repaired. Finally, if none the above solutions work, the culprit may be a faulty multifunction turn signal switch, which is usually round in appearance and located underneath the dash.

More than likely you have a rusted ground.