20 Most Recent 1998 GMC Sierra - Page 2 Questions & Answers

Is your coolant low, does your blower blow air

Cut the cables close the rear brakes. OR replace both of them.

Turn/Hazard Flasher Mounted to the convenience center, under the left side of the IP, to the left side of the steering column, on the bulkhead

Donna, steering column wire diagram, check the attached links,instruction and guides, Good luck. "I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info." http://alarmsellout.com/support/diagrams/vehicle/GMC%20SIERRA%201988-2005.pdf Repair Guides Wiring Diagrams Wiring Diagrams AutoZone com Wiring Diagram 1998 GMC Sierra steering column wiring diagram Google Search

run the fault codes and look for a problem servo/ solenoid for reverse gear

Check all your vacuum hoses especially at the PCV coming off the valve cover it is often over looked. The PCV fits loose either put a new bushing in the cover or add some black tape to the PCV at least until you figure out that might be the issue. Also your timing should be at TDC or 2 degrees plus or minus. Contrary to popular belief You can use a timing light you can see the timing mark know about where it is and line up the fly wheel mark accordingly.

The light switch doesn't make them get brighter. Your lights are working fine. If it seems dim to you. Look at the light lens. If they are plastic, they can be sanded( 1000 grit sand paper) and polished back out. This helps, but if the lens is to yellowed or crazed, it won't help.

There's always a box with relays black with clips you take off to check..

Could be poor fuel or an ignition problem. Has it just started hapening after a fill up? or did you use a different fuel ? IE/ There are a few different fuel mixes. Standard through to premuim. Sometimes this will cause your car to "miss" if its supposed to run on higher octane fuel.

Sounds like an issue with the passlock II security system. You're definitely not the first person to experience this. You can find videos using google to show you how to bypass it. It involves measuring the resistance and and then wiring in the proper value resistors from your local Radio Shack

Its the passlock system , the best thing to do is disable it with the many boxes available online for less that 20 dollars or , you can resistor it out at the computer see passlock disable on youtube

Sounds like a "ground harness" issue. Most likely a common ground for the cluster and TCM.

4X4 actually provides power to the front 2, and the back 2. Unless the back has limited slip or posi-track, if 1 wheel spins, the other will not turn. Since the front wheels have to turn at different rates to accomodate turning radius differences, there is (usually) to limited slip on the front differential, so if one wheel spins, the other will not turn. So, if you have one front wheel spinning at the same time as one back wheel is spinning, and you don't have posi-trac, you're stuck. Cheerfuls.

check all wires for a short to ground

surge problems cause by fuel pump and transmission torque converter.

How to adjust headlights on 99 05 Chevy

Open your hood. Look right above your headlights just inside the hood area, you'll see a small steel rod sticking up. To it's outside, against the fender is another one. They have tiny hex heads on them. Find a good fitting socket and adjust away. The fender side rod is in and out, the inside one is up/down.