20 Most Recent 1999 GMC Safari - Page 3 Questions & Answers

You will need to go through your lines on the vacc and find the leak normally its a seal right at the vaccume motor or a cracked tube on earlier years good luck im in the same situation at the moment

It just pops in and out of the dash along with the light control switch.

The headlight dimmer not the dash dimmer? If so here are the instructions

1Remove the steering wheel shroud, using a Phillips-head screwdriver.

2Locate the two screws holding in the multiswitch. Take these screws out with the Phillips-head screwdriver. You may have to adjust the tilt on the steering wheel to access the screws.

• 3Pull the switch out slowly by hand. This will expose the wiring harness that is attached to the switch. Separate the wires from the harness by prying the tab up with your fingers and pulling them apart. There will be one large harness and two smaller harnesses to detach.
• 4Separate the switch from the steering console by pulling it out with your hands. Pull slowly to prevent the switch from catching on other components.

Installation

• 5Attach the wires to the new switch. The new wires should be spliced to fit your vehicle schematics. Simply push the wires into the appropriate harness. They will click when they are seated correctly.
• 6Position the switch to the steering column. Start the screws to ensure it fits correctly.
• 7Tighten the screws with the screwdriver.
• 8Turn the ignition key in your Safari to the "Run" position, but do not crank the vehicle. Test the switch to ensure the turn signals are working correctly. Test the windshield wipers as well as the dimmer switch.
• 9Tighten the steering shroud back around the steering console, using the screwdriver.

WHAT ABOUT ANY FUSE OR RELAY FOR THE A/C ?

r134 or freon may be low. In which case you may have a leak in either the compressor, condenser, or the accumulator coil(s). Have it checked with an EPA certified technician. If the system has a leak, putting freon in it wil only give you temporary relief. And it will leak out again in time.

If you are talking about the front ac - it is an orifice tube in one of the ac lines going to the condenser.

You can add what is called "Limited slip additive" to your transfer case. Available at all GM Dealers, and most part stores. You are a good driver to feel and hear this symptom...Hope this helps.

If your not getting the MIL- engine light coming on and you can smell gas and you had the fuel pump replaced. I would sespect the electronic ignition module of being intermintent. It wouldn,t necessarily show as an engine code and would make it so the vehicle would run find one munite and not run the next The other thing you could check is the fuel filter however i can,t see a mechineic not changeing this with the fuel pump

It could be that the belt/belts are dry and worn out. It's also possible that you have a noisy idler pulley or belt tensioner. I have used, with great success I might add, some stuff called Door Ease. You can buy it at a hardware store and it looks like a stick of glue, but it's used to lube door hinges. Apply that to the fan belts when the engine is running. Please please please be careful doing this. I don't want any lost fingers... Anyhow, if the noise persists after thins I would suspect a pulley as the culprit.