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  1. Jerrys1990

    C10 wheels/lug nuts

    My '90 2wd has 1994 alloy wheels on it, where it originally came with the 4 hole steel wheels and snap on center caps (like in pic 1 which I borrowed from a members post.) I'd like to put 80's 15x7 C10 wheels and caps on (see pic 2.) What size/style chrome lug nuts do I need for...
  2. Jerrys1990

    T-stat housing bolts

    Good morning, I'm at work today off the clock to finally replace my thermostat. My issue is, the housing bolts are mega tight. I've been applying a good amount of force with my long handle ratchet and they won't break loose. Since the intake is aluminum, I'm afraid of breaking a bolt off or...
  3. Jerrys1990

    Luke Warm Heat

    Couldn't find a clear cut answer during search. My '90 has weak heat now that it's getting cold out. I warm it up 10-15 mins before I leave and the output is luke warm at best. Even driving freeway to work, it doesn't really get "hot." Assuming the thermostat is the correct 195 degree piece, do...
  4. Jerrys1990

    Where to get interior paint??

    Before I go on a wild goose chase, I thought I should ask here first. Most of my tan interior trim for my '90 C1500 is brittle and cracked. I have red A-pillar trim I got from our local junk yard, ready to paint. Where can I find matching interior paint, and what did Chevy call it? Just "tan"...
  5. Jerrys1990

    New skool posi in old skool housing

    My friends 2002 Avalanche needs a rear end. The panhard bracket broke off the axle tube and someone tried to repair it poorly with a welder. It has a 3.73 posi, and is a 10 bolt. Would that posi unit fit in my 5 lug 1990 rear end with a 3.42 gear set?? I can't imagine the axle spline count...
  6. Jerrys1990

    TBI equipped Vortec Questions

    Reading a lot here and on other sites, but still confused. Over the next year, I'm planning to install a low-mile $250 junkyard Vortec long block in my truck (1990 C1500 2WD) and keep all of my TBI stuff on it for simplicity. Everything will be stock...I'm not interested in headers, bigger...
  7. Jerrys1990

    Heated o2 conversion wiring

    I just got my 3 wire o2 sensor and Michigan Motorsports wire harness. Does anyone have a fuel pump relay diagram for a 1990 C1500? I'd like my new o2 to use it's own relay and fuse, but I'd like to trigger that relay with the wire on the F/P that's only hot in Start and Run. Can't find a diagram...
  8. Jerrys1990

    New Rear Glass Leaks On Inside

    I'll try to make this brief. New guy, with a "new" 1990 C1500. I just had the windshield and rear glass replaced. At the last minute while doing the job, the techs pulled me aside to show me "bad rust" in the glass channels front and rear. They immediately said they would not guarantee...
  9. Jerrys1990

    Intro Post from Michigan

    Hi, my name is Jerry, and I have a GMT400 problem. :D I'm from mid-Michigan, and just bought a rust-free Alabama raised 1990 C1500 after my Nissan was totaled in the Davison hail storm last month. I have browsed this site many times looking for info, and decided to join after needing to see...

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