Question about 1991 GMC Suburban
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Posted on Jan 02, 2017
I would guess it is the electronic fan clutch. It will cause the fan to run too fast (very loud) and the light will come on sometimes.
Posted on Dec 28, 2008
I doubt it's your 4x4. Most transfer case will start turning the front driveshaft, meaning that BOTH front wheels would try to turn.
Could be a brake pad/caliper locking up on your left wheel. That'll make that wheel turn slower resulting in the veering left.
Could also be a wheel bearing. However usually you'll hear a grinding noise to go along with that. And it'll pull rather consistently in that direction rather than suddenly.
Or, what first comes to mind is that your steering box is loose, or the gear inside the steering box is stripped in one spot. Or your front tie rods could be shifting or possibly ball joints. These would cause a sudden shifting/veering.
All of these things are front end related. And also very dangerous. Take it down to any alignment shop, have them put it on a lift, and diagnose immediately.
Worse case scenerio is that a front end part breaks and sends you out of control and into someone else. Please get it checked. A diesel Suburban could do a lot of damage.
Posted on Feb 10, 2009
behind the glove box is a distabution box it has a door that is controled by vacum also check to see if this is hooked up , and the door is not stuck
Posted on Apr 10, 2009
I don't think you have to remove the air bag to access. Did you take the torx head screws out of the bottom of the plastic?
Word of caution. I don't think this was designed for the average backyard mechanic to service. You'll have to replace the whole lever system all the way back to the wiring harness or cut and splice...which can get ugly. When I tried to get mine apart to replace the same thing, I broke several things trying to get it apart...and wound up replacing the entire steering column. After that I discovered that I had activated the anti theft system that I didn't know existed and had to have the truck towed to a dealership to get the computer reprogrammed. Do a lot more research before you try this or talk to someone who has been successful.
Posted on Sep 02, 2009
It sounds like the fuel filter may have reached it life time and needs to be replaced. The fuel filter should be replaced every 15,000 miles if not once every year to ensure that the fuel system is running 100%. A dirty fuel filter is the #1 cause of fuel pump failure due to extra heat created to push the gas to the fuel injectors, the other cause is running the gas tank less then 1/4. It's the gas that keep the fuel pump cool and not running hot.
Start with the simple and replace the fuel filter which should be located On all C/K's of this body-type 88-98, the fuel filter is located under the driver's side door inside the frame rail near the crossmember that supports the tail of the transmission. Replace it with AC Delco part GF-626, FRAM part G3727, or other comparable brand corresponding metal bodied filter. You should use a flare-nut wrench for the line fitting and one for the filter fitting. I'm not sure of the size needed for the filter, but the line should be 5/8"
For SFI engines ('96 and later) you need to bleed off the pressure in the line. Locate the pressure test port on the fuel rail under the hood, remove the cap, press valve to relieve line pressure and recap valve. If ground clearance is not high enough to get under vehicle and work, raise it with jack and rest frame on jack stands.
Caution: Fuel in lines and filter will run out once fittings are undone. Use fuel safe container to catch fuel spill.
Take wrenches and hold filter from rotating, while loosening line fittings. Remove Filter from bracket by sliding and manipulating fuel lines for clearance, and slide filter out of bracket.
Reassembly is reverse of disassembly. Tighten fittings snugly. Reconnect battery, turn ignition on (do not start). Pump will make brief whirring sound - less than 5 seconds. Check for leaks. No leaks - good. Now you can drive again.
Hope that helps, keep me posted. Glad to know you got your truck running 100% again soon.
Posted on Nov 05, 2009
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