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  1. William Keiter

    1990 K3500 brake controller and plug wiring setup

    Can anyone tell me a good trailer wiring set-up from adding a 7-way plug and wiring all the way to adding a brake controller. I have a 1990 3500 with a receiver and no wiring whatsoever. Guessing previous owner removed. Have been trying to research a good set up but figured I best ask for...
  2. William Keiter

    1990 K3500 Rear brake shoes done

    Replaced my rear drum brake shoes on dually K3500, now believe if I can do that job in my driveway I can accomplish anything. Very difficult removing the drums. Driver’s side I had to sneak in the inspection window and loosen the tensioner. Overall brakes feel great but could be bleed again...
  3. William Keiter

    Oil Pan gasket 1990 K3500 7.4L

    I have been looking at oil leaking for awhile, anyone have the steps it takes to replace an oil pan gasket on a 1990 K3500 7.4 engine?
  4. William Keiter

    1990 K3500 Dually Front Rotor/brakes replacement questions

    Afternoon, I recently ordered front brake pads and rotors from NAPA. Realized after purchase it appears I have to separate the from hub bearing to replace the rotors. Do I need to go ahead and do the hub bearing assy while I am in there? If so what do I need to look out for and ensure I am...
  5. William Keiter

    Maxing out payload with Slide in Camper?

    I have a 1990 K3500 Dually 7.4L 4:10 ext cab and am looking at my father-in-laws 1998 Alpenlite Laredo 10 Slide-in Camper. Checked the weight last weekend and its 3,200 lbs. Didn't think it would be a problem being a dually but it appears the payload cargo weight rating is 3,000 lbs. Anyone...
  6. William Keiter

    Shock length with 2.5 inch lift?

    Purchased K3500 with a 2.5 inch block is the rear. When buying new shocks how do I select the appropriate length or part number. Probably looking at Bilstiens or Fox shocks
  7. William Keiter

    Transmission fluid leaks

    Anyone dealt with transmission fluid that appears to be leaking from the center of the radiator area into the shroud and down along the front clip? History, recently purchased 1990 K3500 7.4L in Jan '21 Previous owner stated and had receipts for replacing the radiator and hoses. I haven't...
  8. William Keiter

    1990 Stereo buttons not working

    Is there any fix to the stereo buttons? My 1990 stereo head unit had some buttons that work, theres that don't and some that decide to work randomly. I tried spraying with electrical cleaner when not powered a few times with no real noticeable improvement. About to take it out and try removing...
  9. William Keiter

    Found short in harness under dash

    Looks like after troubleshooting a no right rear brake light/flasher for a week I may be on to something. All the wiring/grounds in rear shot good. Moved up to interior where I found what appears to be a broken wire under the dash inside the harness just above the pedals. See video, you can...
  10. William Keiter

    1990 K3500 Passenger Brake/Turn light issues

    I have been working to troubleshoot a rapid flash/no brake light problem on the right/passenger rear light since recently buying my truck. Checked and changed all fuses, no sign of anything. The previous owner mentioned he thought it was wiring and I could see a relay hanging from under the...
  11. William Keiter

    Need help with exhaust questions on 1990 K3500 7.4L

    So I picked up a 1990 K3500 4x4 with a 7.4L 454 engine last week and am looking it over when I notice it doesn't have a catalytic convertor installed and I live in an Utah county with smog testing. I have an appointment a a local exhaust shop and need to now what I should do for the meantime to...
  12. William Keiter

    New here just picked up a 1990 K3500 Dually 7.4L TH400

    Hello, wasn’t planning on buying this truck but it found me the past weekend. After seeing maintenance records and receipts I couldn’t pass on it.

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