20 Most Recent 1992 GMC Suburban Questions & Answers

You need to perform an OBDII diagnostic test and look at the stored faults. Sounds like a temp sensor or Mass Airflow Sensor. Also dirty air filter needs to be changed every 40,000 miles. be sure to delete stored faults and recheck OBDII periodically for new faults.

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Call the Dealer and see if can replace it based on your vin number.If so that will be the cheapest option.

The fuse marked dome, or just take a cable off of the battery.

Sensor in mounted in the tail shaft of the transmission. Has an electrical plugged into it

Could be 3 different things, 1, speedometer head has failed, speed sensor in the tailshaft housing on trans failed or the speedometer buffer failed

Under the dash on the steering column is a white piece that looks like a crescent moon. That piece is the neutral and backup switch for the steering column mounted shifter.

Start by checking the fuel filter to make sure that it is not stopped up and also check the fuel pump and make sure that the rubber hose that goes from the pump to the module is not dry rotted and is leaking back into the tank causing you to lose fuel volume during acceleration and stuff like that dewd:P

it's low on freon

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older GM's have an electric motor on the transfer case to engage the front wheels. Since it is under the truck they do corrode. Look there first. Easy to fix if so.

You have either a blend door problem,or the blend door actuator. Both are located underneath the dash.

Pressure's down in system.Refill the system one can at a time of refrigerant.If one can fores the clutch and gets cold inside,good to go.Too much refrigerant will hamper the temperature and will stay low.Not cool.So one at a time.

Get yourself a couple of cans of refrigerant and a hose to do this,it comes as a kit at the auto parts store,or ask someone there.Connect the hose to the can with the needle out,then connect the other end to the fitting on the car,there's 2 fittings but will only fit one of them(they have a cap like a tire fill on them)then screw the needle in to puncture the can top and with engine running,the can will empty and refill your system.You maybe need a second can if this doesn't cause the clutch to ingage.Have the A/c ingaged too.[ut the cap back on when done.Dispose of the can properly and keep the hose.Have your system tested for leaks,they make a sealer in the same style cans for leaky systems.

spray carb cleaner around the base of the throttle body when cold see if the idle changes if you also have surging then replace the pick up coil inside the dist

Could be the blower motor, fuse, relay, switch, or the resistor.

time for a new compressor. It's a magnetically controlled belt driven compressor. If it isn't clutching anymore, it's dead. pretty soon it'll start squealing or making other funky noises if it isn't completely dead yet, then soon you'll press the "ac" button and nothing will happen.

Should be behind the dist near the firewall.