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  1. 84GMCSierra

    Defroster not working

    In the ball shaped contraption by the brake booster? Or where the line goes into the dash by the AC box?
  2. 84GMCSierra

    Cowl Screen

    Good Afternoon everyone. I have a question about the cowl screen. I just pulled mine out and couldn't believe the amount of pine needles under it. I thought hese were supposed to stop a good portion of debris from getting in? I do have one small square hole, but was wondering if I could put some...
  3. 84GMCSierra

    Defroster not working

    Ok you all. Just tore everything apart(cowl panel and screen, and went through all the lines I can see, and replaced some vacuum lines going through a check valve, into the intake, and can't find anything off or broken. One thing I did notice is the lever that opens the large door(where I'm...
  4. 84GMCSierra

    Horn recommendation

    What do you all recommend for a loud horn? I had one stock horn on my 84 Sierra when I bought it, and found one for the right side at U Pick It in Prescott, but they aren't very loud. Is there a good under hood mounted air horn fairly reasonably priced that will get attention?
  5. 84GMCSierra

    5.7nhigh millage what oil do you use?

    That's what I use. Our Walmart doesn't carry conventional oil in quarts, only semi and full synthetic, but they have this.
  6. 84GMCSierra

    recommend some tough seat covers

    I understand that, but my cloth seat has split in the seams. Not sure how old it is but may change my mind later, lol
  7. 84GMCSierra

    New brake lines

    Has anyone here had issues with Inline Tube parts? I've used them for years and they seem perfect. I posted on a FB group and was told to check the flares as they can be bad etc. I replaced the steel rear axle lines a month or so ago, and they are fine and going to do fronts today. A question I...
  8. 84GMCSierra

    recommend some tough seat covers

    I'm going with blue marine grade vinyl on my stock bench. A friend of our has an upholstery business so when wife and I go to Las Vegas in December, I'm going to leave it with her to do. I know vinyl will be hot, but when I get my AC retrofitted to 134, I will be good.
  9. 84GMCSierra

    Restoring old family truck

    I agree. My dad bought an old 65 Suburban back in 1976 and it had the 292. Unfortunately he decided to upgrade to a V-8. When I bought the 'burb, I wished it had the old 6 still in it
  10. 84GMCSierra

    ac control vacume line source

    Sorry to jump in here, but is there a diagram like the one above for an 84 Sierra, base model, 350/TH400 with AC? Or is this diagram pretty much the same for all models with the exception of trans type?
  11. 84GMCSierra

    Defroster not working

    My truck does have AC but it has been out since I removed the compressor, accumulator etc to give the engine a really good degreasing in 2019. Defrosters used to work but not since I last tried them about a month or so ago. When I go through al the settings on the control panel, the only place...
  12. 84GMCSierra

    Vent window adjustment?

    Farther down on this post, it was said that only 79-80 models had the secondary seal on the doors? Just wondering why on just these 2 years?
  13. 84GMCSierra

    Defroster not working

    I'm having a problem with my defrosters. When I put the blower on, the air is only coming out of the larger door in the ductwork near the floor(1st pic).I cant tell if there is anything missing from the vacuum connection on the back of the control panel so maybe someone here can see anything...
  14. 84GMCSierra

    Hub cap/trim ring combo

    I want to get a set of those so I can have my stock steel wheels restored
  15. 84GMCSierra

    Taillight lens

    I use Turtle Wax on mine, inside and out once a month, atleast the outside. Mine were faded and I also replaced both inner housings for the bulbs. They make them in black, so I painted them gloss white then waxed them. Made a world of difference
  16. 84GMCSierra

    Removing dent without backside access

    I have a similar issue on the roof of my truck. I may see if one of those places that does paintless dent removal can get it out
  17. 84GMCSierra

    Fix Slamming Doors - Striker Door Latch Repair

    That's what I used, except mine is blue to match the interior, lol. Put it on several years ago and doors close great. No need to buy the whole striker unless yours is rusted or damaged. I bought a 1 foot piece and it will last me forever. If anyone local to me has a need for some, during our...
  18. 84GMCSierra

    Upper door weatherstrip question.

    I recently saw a picture or a post somewhere, I can't remember of an 81-87 pickup with weatherstrip along the top of the door as well as around the door frame. Were there some models that had this? If so, how would I know if my 84 C2500 base would have had it? Thanks and hope you're all having a...
  19. 84GMCSierra

    Underside of hood coating ideas?

    Back in the 90's, my best friend had a bedliner business, and I had him spray the underside of the hood of my 65 Suburban(gloss black). Yes it added weight, but it looked killer and sounded very solid. I also had him do the gas tank on my original 65 Chevy II Nova 4 door. Rocks were always...
  20. 84GMCSierra

    What have you done to your square lately??

    Going to replace all the steel brake lines on my 84 Sierra 2500 daily driver. I cant get the front rubber line off as it's pretty well stuck so might as well replace it all. Got all 4 pieces at inlinetube.com for under $100
  21. 84GMCSierra

    What have you done to your square lately??

    Just about where I put mine only to the left more. Bad idea. I can't see it. Looked great as I was leaning over installing it though, lol
  22. 84GMCSierra

    What have you done to your square lately??

    My wife had a knee revision in Flagstaff June 27th but for a couple of months before we were driving I-17 from Cottonwood to Flagstaff for pre op appointments and 17 South was really bad as they were working on it. People including trucks were driving on the right shoulder to avoid the huge...
  23. 84GMCSierra

    Whats you gas mileage on your squarebody truck?

    I get about 8! I replaced the vacuum lines, has a new distributor, carb in 2019, and getting new plugs and wires. Runs smooth at idle, but under a load, it feels like it's missing. Sending it in to the shop in a couple weeks to have it all checked out
  24. 84GMCSierra

    Starter wires near exhaust manifold

    Does anyone have a picture of the tube that was mentioned? I never knew there was such a thing. Mine is long gone as I have an aftermarket 350 in my 84 Sierra
  25. 84GMCSierra

    Spark plug wires

    I have a drawing of the routing out of my 84 shop manual. I'll look at it and see how they were routed. I don't have any holders either, and want the cleanest look I can get.

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