GMC Suburban ABS And 4wd Won't Lock

Problem with my GMC SUBURBAN. Question :
THE PROBLEM I HAVE THE VEHICLE IS IN TWO WHEEL DRIVE ABS THE LIGHT INDICATES BUT ALSO THE AUTO LIGHT IS ON SIMULTANEOUSLY. AND THE VEHICLE FEELS LIKE ITS IN FOUR WHEEL DRIVE. JUST STARTED WHAT COULD THE PROBLEM BE. THANK YOU MIKE. I WILL MAKE A DONATION IF YOU DO RESPOND, GIVE MY WORD

Answer:
There are a few things that can cause this condition. Most common is the actual switch. The switch works off resistance and sends a signal to the transfer case control module (TCCM). The module sends a signal to the 4 wheel drive motor. If the resistance in the switch is not correct, it sends 2 different signals to the module, which confuses it.

You could try to unplug the switch with the key on, re-connect, turn key off, then start truck and see if conditions are corrected. This is a sign of a bad switch. Without looking at scanner data, checking codes, and doing some voltage / resistance checks, it would be hard to determine if the switch or the module.

A new module would have to be programmed to function. 4 wd. motors have also gone bad, but nearly as common as above.

2002 Chevy Suburban Engine size :V6 4.3L 2WD Question:
My truck is wanting to lock up, more like its catching when I go to stop. But its not the brake pads or shoes, they are still in pretty good condition. But I still hear a metal on metal grinding sound while driving around but its even worse when I go to stop. It all started when I was driving down a dirt road and a car came barreling towards me, so I had to run the truck off the road into a field and I had to slam on the brakes to keep from entering the woods at 40 mph.

Answer:
If you're sure the brakes are ok and not grinding or worn, then you probably bent something when you took it off road to avoid the other car. There are backing plates on both the front and rear brakes that could have bent inward and be rubbing against the front brake rotors or rear drums

You would have to get under the truck or take the wheels off to see if that is what is making the grinding noise. You should probably also check for any other damage to the suspension and drive train that might be making noise too.

Question:
1978 Chevy Suburban. Cut new threads on stud. Question:
I need to change studs. What tools do I need and how to do the job.

Answer:
Seeing as how you didn't describe what stud you need to change, I'll assume you probably mean a lug stud. If it's a front stud, you can remove the brake rotor and pound the stud out the backside of it with a hammer. Same goes for the rear, but the stud is pressed into the axle so you'd have to leave that in, but can hammer it out as well.

To install a new one, just feed it through the hole and put some pressure against the back of it while you tighten a lug nut, this will draw the stud into position and you'll be done.

Question:
1999 Chevy Suburban Truck. My Gas Gauge seems to not be working accurately. At times, I can fill my tank and it reads less than eighth of tank or E. Other times I know I am almost on empty and the gas gauge is showing almost full. It seems to fluctuate tremendously even when I am driving. Is there an easy fix to this?

Answer:
That is a common problem with that, and similar vehicles. You need to have the "fuel level sensor" replaced. That sensor is in the fuel tank, and attached to the fuel pump module. The fuel tank will need to come out. Also, whoever does the repairs needs to look closely at the wiring connector for the assembly. They also have a tendency to burn.