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Search results

  1. Big T

    Problem: Heavy shudder upon braking

    ABS light is on. Occasionally it goes off and the system works. I had similar thoughts. I do not have my Tech 2 with me. Tests I did over the weekend indicated the ABS pump motor is shot. I’ve ordered a reman ABS unit which is all that you can get now. I could pull a plug and disable the ABS...
  2. Big T

    Problem: Heavy shudder upon braking

    The spare is brand new. I can try putting that on, but I know the result will be the same.
  3. Big T

    Problem: Heavy shudder upon braking

    These are new braided stainless lines.
  4. Big T

    Problem: Heavy shudder upon braking

    Same thing happened when I put new balanced tires on the front. They are on in the video. Feel nothing from the tires while driving at highway speed.
  5. Big T

    Problem: Heavy shudder upon braking

    Old rotors did it and brand new rotors are doing it. Do not feel it in the pedal nor at stops at slow speed.
  6. Big T

    Problem: Heavy shudder upon braking

    This is on my ‘99 Suburban. Have a shudder from the right front upon braking. It increases the heavier I hit the brakes. This was happening before the broken tie rod incident which was on the right front. I rebuilt the front end with new ball joints, tie rods, ES poly bushings on forged...
  7. Big T

    ABS Diagnosis and Repair

    Well I traded messages with the seller of the reman ABS units and I confirmed the fit based on VIN #. Pictures show a complete ABS unit with proportioning valve in place and EBCM, so I do not need the o-rings, valve tubes an TTY Torx bolts. Seller has excellent feedback, so fingers crossed this...
  8. Big T

    Build for member John S

    Are the golf ball dimpled piston all that they are cracked up to be?
  9. Big T

    ABS Diagnosis and Repair

    Found this video on the ABS and it is excellent: My ‘99 K2500 failed on the first ohm meter test with a reading of 0.0, which points to a bad pump (windings or brushes creating an open circuit). The pump is mounted to the brake pressure modulator valve (BPMV) which along with the electronic...
  10. Big T

    New Bosch India 6.5 turbo injectors

    I know this is delayed, but how did these injectors test out?
  11. Big T

    What did you do with your GMT400 today...or yesterday....

    Replaced the rear exhaust hanger on the ‘99, as the original had broken its metal band and was on its way to breaking completely. Next I will replace the section of exhaust from the muffler back. Front brake pads arrived today. Front rotors arrive Saturday. So front brakes on Sunday...
  12. Big T

    GMT800 Door Pins & Bushings

    The Dorman bushings do not last very long, that’s if you can get them in without breaking them.
  13. Big T

    GMT800 Door Pins & Bushings

    Cunningham Machine makes superior (to Dorman) pins and bushings for the GMT-400.
  14. Big T

    What did you do with your GMT400 today...or yesterday....

    Well it was a quick assessment on the Service 4wd light. Crawled under the truck and found the 4-pin harness plug to the transfer case shift motor had somehow dropp and then was rubbing on the front drive shaft. Lost the female side of the plug. New pigtail repair plug ordered.
  15. Big T

    What did you do with your GMT400 today...or yesterday....

    Just a short 10 hour drive today to Paveltolz’s place where I completed the Red, White, and Blue 6.5 lineup: My ‘99 Burb still has vibration issues in the front. Has vibration while braking coming front right front. It increases from subtle while lightly braking, to a heavy shudder under...
  16. Big T

    No Bull

  17. Big T

    What did you do with your GMT400 today...or yesterday....

    My thoughts: sell it. These Blazers had a bad reputation. I cringed when you bought it. You don’t deserve to be punished by this vehicle.
  18. Big T

    What did you do with your GMT400 today...or yesterday....

    I had this issue on return line hoses after installing the Optimizer (thanks Paveltolz). Had to get another set of return lines. Ended up driving the last half of the trip from Montana to SoCal with an unknown, but slow leak on the first injector on the driver’s side. It has been fine since...
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