gmc

  1. dylanfish

    Looking for 73-74 gmc grill

    When I bought my truck it came with a Chevy grill and after finally getting it running and driving I’m hoping to make it a gmc again. It’s extremely hard to find a 73-74 gmc grill on Craigslist, marketplace, OfferUp etc. so I was hoping someone in the forums would possibly have one lying around...
  2. s109eod

    New member, Australia

    G'day from Australia. Just acquired an 81 GMC Dually. Regular cab 454 and TH400, badged 3500. Was in storage undercover for 15y, everything is there starts and drives okay, but lots of bodywork, mech and elec tasks to get it up to scratch. Hoping to access advice and parts through the forum to...
  3. jkell2a

    question about gmc vs chevy

    I recently purchased a 1984 GMC Sierra 1500, I know that Squarebodys made by GM are pretty much the same besides the badges and I was wondering if i would be considered "wrong" if i put chevy emblems on my GMC truck, I simply like the bowties and prefer it more, Let me know... thanks
  4. T

    1982 C30 custom deluxe single rear wheel

    hey I’m new here and I’m really trying to find out more about my truck. It’s a single rear wheel 1982 c30 (supposedly) with 4 speed Manual and a 350 under the hood. It used to be a refinery truck so it did a lot of idling in its life. But I am curious, when I look up the VIN it says it’s an 82 1...
  5. G

    Clutch pedal clunk. Only when in 4HI

    Hi all, so I've noticed something on this truck I am new too. Here are some details of whats happening. Any thoughts? So basically were were driving in 4hi-lock since we got it... Guestimating about 150miles. We discovered that we have an NP-203 transfer case and it's a full time transfer...
  6. Storydad92

    Hello from Southern Indiana

    Well, hello there all the folks who are life savers and headache averting pool's of knowledge. I've been lurking for quite some time, and finally decided to create an account and take a more active role in being a part of this community, even if it means doing the stupid things that others would...
  7. G

    New to me truck/ what should i go through and look at

    Hi all, I'm new to the forum here. Also new to chevy/gmc trucks. I picked up myself a 1974 gmc k25 about a month ago. Its got a 350 block, and sm465 transmision and an NP203 transfer case, not sure whats in the diffs. Again I'm very new to trucks. Most of my experience has been on my grandpa's...
  8. M

    First Time Square Body Owner

    Hello all. Name is Matthew and was given this forum link by a friend and decided to join. Recently inherited a 1985 GMC K1500 from my Grandfather & was told to show it off here as some would appreciate seeing it. He rescued the truck from a junkyard outside of Belton, Texas and spent his last...
  9. Thesiger

    '89 GMC 'Burb grill swap questions

    I'm looking at an '89 GMC Suburban. Very clean, only issue is, I hate the late GMC grill style. So my question is, is it easy, hard or impossible with chopping and unique tools to do a 'non-invasive' (No major cutting) swap to, say, a '81 GMC grill? or an '86 Chevrolet grill? how different are...
  10. Zachbell89

    Bore size

    Does anyone know what the hub bore size is on a 79 gmc sierra grande 4x4?
  11. L

    GMC orange color code

    I wonder if anyone know what is the color code of GMC logo emblem because i want to restore my sierra grande emblem but don’t know wich orange to pick. Thanks you.
    • larocque
    • Thread
    • color code emblems gmc trims
    • Replies: 6
    • Forum: Exterior
  12. GMC_Nick

    Grill hunt 89-91 GMC single headlight

    Anyone know where i can find a gmc grill like the one in the first picture? I have a chevy one on my truck in the second picture but I like the gmc look better, can't find one anywhere
    • GMC_Nick
    • Thread
    • 1989 1990 1991 gmc grill
    • Replies: 5
    • Forum: Exterior
  13. S

    Problem getting a 1979 GMC 350 running

    Have a 1979 GMC 1500 with a 350. It sat for 18 months and when I took it out, there wasn’t much power and full throttle didn’t have much pick up. Changed out a rusty tank, went through the carb and now it starts barely with full throttle, runs for a few seconds and dies. Carb is full of fuel...
  14. Nony

    1981 C7000 Starting Issue

    Hello, I’m no mech, so please bare with me. My smog pump froze on me, so I replaced the belt to run the alternator solo. After a jump, it idled for a good 20 minutes then I shut it down. Picked up a new battery from Napa and it fired right up. The next morning I go to start it, click or pop...
    • Nony
    • Thread
    • 1981 c7000 dump truck electrical gmc ignition no crank no power starter issues wiring
    • Replies: 5
    • Forum: Tech Discussion
  15. AyWoSch Motors

    New truck... maybe. Should I?

    So, at my Boss's house there is this 78 GMC Jimmy High Seirra. Used to be his daily, but then got a new truck, and now it sits collecting dust. He said it ran and drove a little over a year ago, still runs good. I'm thinking of buying it. 350, with a edelbrock performer intake and edelbrock...
  16. Turbo4whl

    Anyone looking for a big Square?

    Craig's list: Juice brakes, no CDL https://hudsonvalley.craigslist.org/cto/d/bethel-87-gmc-c6000-chassis-cab-must/7325908675.html
  17. AyWoSch Motors

    Bed liner yes or no

    I'm looking for some insight on whether or not I should bed line my truck bed or not. I have an 86 GMC Sierra k15 shortbed. My bed doesnt have a dent in it at all, no rust, but it is shiny bare metal in the back from 35 years of use. Now I can't much stand the plastic bed liners that just pop...
  18. Powerhouse Ranch

    Late 80s GMC Grille

    Looking for original mint condition grill for late 80s GMC. This is an important piece i want on my resto. Thanks..
  19. Highsierra84

    6.2 Detroit into a 84 gasser

    Scored an 1986 J code 6.2 Detroit Diesel no ac Engine for the future power plant for my 1984 gmc k25. New Donor power plant has 180k mileage so not that to bad. My plan for the swap was to tear down to the block, inspect the heads, slap it back together with new gaskets/seals. Most likely get...
  20. Ladder80

    Yeah my posts are too long, but... this truck...

    The first time I was in this truck was before I can remember it just always existed as far as I knew, it was my grandfathers truck, and the only one I ever knew him to own. The last time it was on the road as a daily driver was in 2001. I was the last passenger it had in it during that...
    • Ladder80
    • Thread
    • 1980 full restoration gmc hand me down
    • Replies: 25
    • Forum: Introduction
  21. B

    General Information

    Can anyone give me any Information on a bracket that's located on the passenger side kick panel in my 1978 GMC wrecker that I'm rebuilding, because I've never seen one in a '73-'87 squarebody before. I've Googled, asked people I know, etc. and have came up empty handed. I would greatly...
  22. E

    Hi There!

    Hi! My name is Ed, and I'm new here. I fell in love with square body's as a kid when my dad bought a K5 Blazer, and that love was reaffirmed later when he bought an '87 GMC Sierra K25. I currently own a '87 GMC R3500 dually. Its and old dump truck (doesn't have the dump bed any more). It...
    • eborges19
    • Thread
    • 1987 2wd 350 c20 dually dumptruck gmc r3500 sm465
    • Replies: 15
    • Forum: Introduction
  23. R

    6.2L - new IP, still won't start

    Hi all, got a '84 K3500 with 6.2L Detroit that I just can't seem to get to start. Here's what I've done so far. Bought it off someone, didn't run, he reckoned it was the IP. I put in a new starter, fixed the glow plug circuit, put all new glow plugs, cleaned injectors with brass brush and...
  24. Preston Tucker

    Rare (ish) 1974 gmc k20!

    Hello every body! I am new to the site but it is the best thing that has happened to me so far! Its awesome, you all are. I am taking on a full restoration of a 1974 gmc k20 that i saved from the junkyard for a price of 50 dollars. Its no gem but is not just the average rusty squarebody! It was...
  25. J

    A short intro...

    ...by another "new" guy. Long time lurker, forgot I hadn't posted an intro. I'm here to learn as much as I can soak up. I have a two-owner '77 GMC 1/2 ton 4x4, factory 350, Muncie SM465 with a NP205. I purchased it in '85 from the original owner who is a friend (so I know the history), and...

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