Top 20 1992 GMC Yukon Questions & Answers

ck the o2 reading with a scanner that will give you live data,ck and see how fast o2 switches from lean to rich, if its slow the o2 sensor may be sluggish and feeding bad info to the ecm. new ones usally solve this

code 43 knock sensor signal 54 Fuel pump circuit - voltage low Wiring open circuit/short circuit to ground, fuel pump relay, fuel pump, engine oil pressure warning lamp switch, ECM hope it helps

I have seen this many time and I would start with replacing the fuel pump and filter.

Hi Paul Baars, I want to help you with your problem, but I need more information from you. Can you please add details in the comment box?

The relay or switch may be shorting, check other door lock controls for correct function, this will rule out relay and isolate the switch or rule out master switch and isolate relay.

CK your distributor rotor ....pull it off and look in side the hole where it fit on the distributor shaft if it really black in side replace it . If OK then either your ignition module ( inside the distributor a little black block with wires going to both end of it ) or the Stator inside the distributor has shorted out . The stator is kinda hard to change if you don't have the right tools . i think rebuilt distributors from the parts store have gotten a lot cheaper then they use to be ; you may want to change the whole thing a new one will come with a new module and stator

Sounds like bad fuel, clogged/blocked fuel filter, air filter maint. of the vehicle needed (may need tune up) or internal engine problems. You have to start with the basics. How many miles, how well was the vehicle maintained etc. Cars usually don't just break with no notice.

Sounds like a bad ignition control module because they will do this.

Hi.

There is a relay in front, buried under the dash on top of the blower motor assembly. See the diagram below:




Depending on A/C version there is also an additional relay at the back, as from diagram below:

You need to check to make sure it has spark. If not it may have a bad ignition module or coil, or problems inside the distrubutor. It may have a faulty temperature sensor for the ecm which can overfuel or underfuel it. You need a scanner to check that. You need to check fuel pressure. Just because you smell gas doesn't mean that the pump is woking correctly.

Dual exhaust w/low restriction mufflers, hi flow air cleaner, synthetic grease in diff(s), platinum plugs, good plug wires, upgrade intake manifold... for starters.

have the tire blance checked and the frontend parts.goodluck

Hi. Maybe its time to replace the drum brakes or have it re-faced. It is very hazardous travelling with worn out brakes shoe.

All the best!

The spark plug gap may be set to be too great. Pull the plugs, clean them, reset the gap to .038 - .040 " and add octane booster to gas for the first atnk. It may just clear it up. Change air filter also.

No it does not, check fuses and relay, possible bad fuel pump if all checks good.

6 bell housing bolts and 3 torque converter bolts

6 bellhousing bolts and 3 torque converter bolts

If your's has one it hooks in the side of the transmission. Most newer cars are electronic. There is a small motor that drives the speedo. After you get the instrument cluster out it is easy to change. Make sure you can buy the motor before you take the cluster out.

Hi!!!! I have the same problem with mine. Did you solve it????

you have over 200 codes it can be. you will need to get it checked out