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  1. MisterB

    High beam dash indicator comes on with low beams

    I installed some new headlights that have white halogen 12V 60/55 watt replaceable bulbs. They have their own harness adapter that plugs in to the old headlight wiring plug. Anyway, all works great, except for I noticed that when the low beams are on, that the two little blue high beam...
  2. MisterB

    Good 12 volt source for LED halo ring on headlights

    I ordered some of those headlights from LMC that have the halo trim ring. I'd like to wire up the trim ring to always be on with the key, whether headlights are on or off. Where would be the cleanest and easiest spot to do this? Each headlight comes with a 12 volt wire. Sent from my SM-N986U...
  3. MisterB

    Squarebody Blazer/Jimmy. 73-75 or 76-87 better?

    I'm thinking of adding a SquareBody Blazer or Jimmy to the stable at some point. It would only be driven during the summer, and the top would be off at all times. The rest of the time it would be garaged. It appears the 73-75 years had a complete convertible roof, whereas the 76-87 have the...
  4. MisterB

    Side air vents. Should each side blow equally?

    I'm referring to those floor side vents that just let in fresh air when you're driving at speed. On my truck, the passenger side blows quite a bit more than the drivers side. Is that normal, or is something maybe plugged in there? Besides directly behind the flap that opens (which I have...
  5. MisterB

    Drag link adjuster. Proper way to tighten?

    I replaced both ends of my drag link with a brand new one, as well as the adjuster sleeve. Got everything installed, but I can't seem to get the adjuster sleeve to tighten enough to hold everything in place when I turn the wheels. I've really cranked on it, and I'm a big dude. The ears touch...
  6. MisterB

    LED flasher. What are these wires for?

    I bought one of these from LMC (see below pic), because I want to install LED bulbs in my front turn signals/running lights that are under the headlights. It appears the fuse goes in the appropriate spot on the fuse block, but what are the wires for? Sent from my SM-N975U1 using Tapatalk
  7. MisterB

    Best way to install new hood hinge springs?

    I bought all new hinges and springs for my '80 from LMC. I also bought their tool, which is essentially a T handle with a hook on the end. I got the hinges on just fine, but I can't get the new springs on. Had to end up just putting the old springs on. I'm strong enough to pull them in to...
  8. MisterB

    Methods for getting steering wheel straight

    What adjustments methods are there to straighten the steering wheel? I had an alignment and they got it good, but since then I've replaced my steering column with a tilt one and then later replaced the lower shaft down to the steering box. I tried my best to get it centered, but it's off a bit...
  9. MisterB

    How does hood to cowl seal attach?

    Mine is missing, so I can't tell how it connects. I'm guessing it attaches through the holes all along the edge in the pic of my truck? The part from LMC shows that there are these things that poke down, so I wasn't sure if that's how it connects. They don't seem to sell any other hardware that...
  10. MisterB

    What is this part called?

    I already put a new brake proportioning valve and gasket in (the white plastic connected to brake booster), but I'm wondering what the other part is called and what it does? Sent from my SM-N975U1 using Tapatalk
  11. MisterB

    Belt sizes

    I've got a 350 with power steering and no A/C. I would like to replace both the fanbelt/alternator and the fanbelt/power steering. NAPA shows both belts are the same exact part number. Does that sound right? Sent from my SM-N975U1 using Tapatalk
  12. MisterB

    How to determine proper shock size

    It's time for new shocks. I have Rancho RS500's, and I just want to buy the same ones again. Problem is, my truck has a 6" lift, and 35" tires on it, so I can't just select the shock size based off year, make and model. I'm aware of how I can remove the bottom bolt from one front and one rear...
  13. MisterB

    Original GMC steering wheel. Very nice, complete

    70's Era square body steering wheel, but will fit 73-87. Complete with horn button and horn button parts. Very good condition. $99, plus $25 shipping to lower 48. I accept PayPal Sent from my SM-N975U1 using Tapatalk
  14. MisterB

    Where can I get a custom SPID label typed up?

    You know what I'm talking about... The glove box sticker that shows the options on the truck and the vin. Mine is missing, and my truck has been heavily modified, so I thought it would be fun to buy a factory looking sticker and then have someone add all the custom stuff I have, like 6" lift...
  15. MisterB

    Got to a project I was putting off... Swapping to a tilt column

    A while back I found a factory tilt column off a '76 square body. I planned to put it in my 1980 square, but I had a feeling it would be pretty involved, and it definitely was. I'm glad I did it, but it took a long time to do it right. I ended up replacing the wiring, turn signal switch, and...
  16. MisterB

    Restored bumper guards, and new bumper installed

    My original bumper had some bends in it, some extra holes drilled in it for fog lights that don't exist, and it had some other issues that made it so I couldn't get the bumper guards to line up properly so I could actually use them. So, I got a new bumper from GMC Paul's. Quality is good...
  17. MisterB

    Restored bumper guards, and new bumper installed

    My original bumper had some bends in it, some extra holes drilled in it for fog lights that don't exist, and it had some other issues that made it so I couldn't get the bumper guards to line up properly so I could actually use them. So, I got a new bumper from GMC Paul's. Quality is good...
  18. MisterB

    Where do the engine bay decals go?

    My truck had a frame off restoration and repaint, and all the stickers were removed in the process from under the hood. LMC sells them, so I bought all the correct ones for a 1980. Are there pictures or drawings that show where they are supposed to go? Sent from my SM-N975U1 using Tapatalk
  19. MisterB

    Dome light door switches. How to change without twisting wire?

    My dome light works when I turn the headlight switch, but not when I open the doors. Both doors have switches. I started by loosening the passenger side switch, but I could tell as I unscrewed it, I could hear the power wire twisting inside, and it almost seems like there's resistance there. I...
  20. MisterB

    Time for this beast to get a CB Radio LOL

    Got the new in box vintage gun rack put in recently, and now I've found a new in box CB from 1985. Good times... Sent from my SM-N975U1 using Tapatalk
  21. MisterB

    Just when I think I have my carb dialed in, I don't

    I have an Edelbrock carb with electric choke. I have adjusted the idle, fast idle, and the fuel mixture screws on the front. The truck runs great, but I have an issue with cold start idling. Here's what it does when cold and starting first thing in the morning. This is when it's between 20-45...
  22. MisterB

    Proper way to bolt positive battery cable to starter?

    I replaced my battery and both cables a week ago just as preventive maintenance. Everything is running fine, but when I was under the truck today draining and filling the front diff, I jiggled the positive battery cable and there was a spark and then it turned over the starter and tried to...
  23. MisterB

    8 MPG?

    I know we don't drive these trucks because they get good mileage. Just trying to make sure I have mine dialed in and I'm getting all I can. 1980 GMC K2500 3/4 ton, 35" mud tires, 6" lift, crate 350 motor recently refreshed with new plugs/wires/cap/rotor/K&N/all new synthetic fluids everywhere...
  24. MisterB

    Interesting observation of my thermostat/temperature gauge

    When I bought my truck, it didn't have a thermostat. The temp gauge was always way on the cold side and didn't budge. I bought a 160 degree thermostat, installed it, and flushed the radiator and put in new coolant. This brought the temp gauge to the middle, once the engine was warm, but it...
  25. MisterB

    Change your throttle cable. Makes a big difference

    The throttle cable goes from the gas pedal, through the firewall, and to the carb. It's a steel line, inside of a plastic casing. After 40 years, the cable can rub the plastic off in areas, and create slack. NAPA has new cables for about $20. I decided to swap mine out, and when I got under the...

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