20 Most Recent 1992 GMC Safari Questions & Answers

We're is the fuse box for a 1993 safari van

Sounds like throttle body and/or its components,"IAC motor-IdleAirControl motor, TPS-ThrottlePositionSensor. Throttle body/Carb cleaner and SeaFoam @the brake booster.

The starter motor when cranking the engine when energized, causes the crankshaft to turn and the belt pulleys will also turn. If the starter motor just sounds without engaging, there is a problem with the starter solenoid or the starter great teeth or the ring great teeth.
Once the engine cranks but will not run, the engine must have compassion, fuel and spark for it to run.

check idling valve for blockage

The partstor will show u. Did u gap plugs rite. Always change one wire at a time to avoid. Make sure all conects are secure

with every thing apart did you check for power and ground at the motor when operating the switch, in both directions. if you do have them then you can hit the window motor while pushing on the button and sometimes the motor will start to work. however it may stop working at any time. if it does not work then the motor needs replacing. either way its a good idea to replace the motor seeing as you have everything apart.

Remove dashboard, remove hvac unit cover, replace heater core. About a 8 hour job with the correct tools. Good luck. Better get a service manual

try auto zone

Hi Jeffery, Im glad to help! Almost all the time when you replace the bulb for the Hi-Mount brake lamp and it still doesn't light up. Its usually a wiring issue near the back door. Here's what you need to do to find the problem. Remove the lamp assembly and with a test light and a good ground start probing the wire from the lamp and forward to the front of the vehicle until the test light lights up. When it does you have found the break in the wire. You'll need to do this on the ground wire also if you don't find a power wire issue. But with the ground wire you'll need to connect your test light to the positive side of the battery. Hope this helps and have an awesome day Jeffery.

Most relays are in the under hood fuse box. check your owners manual. Good-Day!

did you change the thermostat? if so. disconnect the upper hose that is connected to the firewall, it is the return for the heater core. and disconnect the lower hose as well. hook a water hose to the upper side and start with a low flow as to not blow out the finns. if this does not work you may have a stuck valve under the dash that opens the heat flap.

dash lights or circuit board are the most probable causes

neutral safety switch , burned fusable link wire or possibly the ignition switch down on the column is out of adjustment. If you have a tilt column try moving up and down all the way to see if it will start if it does your switch is not adjusted correctly or you may have a broken ignition rack inside the column. The ign. rack is what mechanically pushes the rod to activate the switch when you rotate the lock cylinder .. Check the small wire going to the starter for power when the key is in the start position. BE SURE THE CAR IS SAFELY ON STANDS.

Here is the diagram

under the hood right of center. above and to the left of the battery.there is a black plastic box about 6x6 in. it has a pop off cover. on the inside of the cover there should be a diagram showing you which of the 2 relays is the fuel pump relay.

limited backfeed but id try a vacume leak