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  1. Seosamh

    AC Compressor occasional noise.

    Hello all. My 1990 K1500 AC works like it always has blowing cold air. However today it made a loud noise that sounded like a miniature air compressor along with an unusual but definitely not a burning smell. It almost seems to me like its over charged though it's never been serviced since I...
  2. Seosamh

    Vapor Canister Hold down.

    Hello all. Hope everyone is enjoying this weekend. I'm hoping someone can send me an image of the correct oem config of the hold down the Vapor canister line. The image I attached shows the vent hose correct for the front diff but my old age has caused me to forget exactly how the metal portion...
  3. Seosamh

    4 Row radiator install, small problem, help needed.

    Hello all. I'm looking for a source or part number for what I believe is a 1/2" UNF male x 1/2" SPT female adapter. Looked on line for hours with no proper result. I don't want to take the easy way by cutting off the oem threaded end fitting. Maybe I'm using the wrong key words in my search for...
  4. Seosamh

    Upgrades 1990 K1500 5.7L Question

    Hello All. Has anyone tried either of the items below? I'm more concerned about fuel economy since I'm still running too rich after changing both injectors in the OEM TBI. Thanks! Holley EFI 502-9 1990-95 5.7L GM Truck? JetChip part #29005?
  5. Seosamh

    1990 K1500 SPEEDOMETER INOP

    Hello All. 1. I have the whole wire harness from the transfer case to firewall took all the looms off and repaired four wires for the transmission connector "4L60 Non electric". 2. Replaced the VSS. 3. Replaced the speedometer. 4. Tested the CC module according to the shop manual with an ohm...
  6. Seosamh

    TRUE DUAL EXHAUST K1500 IMAGE SHARE

    Hello all. After purchasing left and right pre-bent tail pipes from Walker I took my 90 K1500 to a custom exhaust facility and told them what I wanted. My only regret is not telling them to configure a cross over pipe. Its been great with no rattles and a medium loudness. Its been five years and...
  7. Seosamh

    New member from New Jersey.

    Hello All. My name is Joe and I'm glad to be a member of this ultimate forum. I was a mechanic back in the 1980's that's why I love my 1990 Silverado K1500. I still have difficulties since I'm rusty to some Chevy truck problems, but I'm also here to help.

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