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Thread: Question about replacing the PMD

  1. #11
    Join Date
    Feb 2007
    Posts
    2,890

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    It is called dielectric grease, every parts store will have it, I don't know if the pad is better or worse. The suburban has a pad and the PMD is good after 13 years. When you replace the ignition module on a gasoline vehicle, it comes with an ampule of dielectric grease, so both must be good.
    Grant H.
    1995 6.5 turbo GMC K2500 extra cab 4x4 pickup, PMD under bumper, mechanical wastegate, 228,000 miles, rebuilt engine, 4.10 diff, 16 mpg
    1994 6.5 turbo GMC K2500 4x4 suburban #9 resistor, PMD in the bumper, mechanical waste gate, 226,000 miles, 3.73 diff, 16 mpg
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, since 1992.

  2. #12
    Join Date
    Sep 2007
    Posts
    353

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    Thanks. That reminded me, I think I have some Super Lube dielectric grease in the garage.
    Last edited by RipnRun; 10-06-2019 at 05:11 PM.
    1997 Silverado 1500 6.5. with 200,000 miles. New fuel injection pump at 132,000 mi. FSD Heat-Sync in bumper hole, marine fuel injectors, air induction kit all from Walt at 148,000 mi. Replaced OEM Fuel Filter Assy, wastegate solenoid valve, OPS and relay at 155,000 mi. Harmonic Balancer replaced. Red dot and White dot EGR replaced. New starter, Instant Heat glow plugs, and glow plug relay/controller at 180,000. Replaced hydroboost and master cylinder in 2016. New Interstate batteries 4/13/19.

  3. #13
    Join Date
    Sep 2007
    Posts
    353

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    Do the #9 resistors go bad?
    1997 Silverado 1500 6.5. with 200,000 miles. New fuel injection pump at 132,000 mi. FSD Heat-Sync in bumper hole, marine fuel injectors, air induction kit all from Walt at 148,000 mi. Replaced OEM Fuel Filter Assy, wastegate solenoid valve, OPS and relay at 155,000 mi. Harmonic Balancer replaced. Red dot and White dot EGR replaced. New starter, Instant Heat glow plugs, and glow plug relay/controller at 180,000. Replaced hydroboost and master cylinder in 2016. New Interstate batteries 4/13/19.

  4. #14
    Join Date
    Feb 2007
    Posts
    2,890

    Default

    I have not heard of one going bad. When repairing electronic devices, it is very rare to find a failed resistor. If the resistor failed, you get a #1 default resistance.
    Grant H.
    1995 6.5 turbo GMC K2500 extra cab 4x4 pickup, PMD under bumper, mechanical wastegate, 228,000 miles, rebuilt engine, 4.10 diff, 16 mpg
    1994 6.5 turbo GMC K2500 4x4 suburban #9 resistor, PMD in the bumper, mechanical waste gate, 226,000 miles, 3.73 diff, 16 mpg
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, since 1992.

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