20 Most Recent
1986 GMC C1500 Questions & Answers
On my 86 gmc 2door the wires broke loose from the
I found window motor connector for your vehicle at rockauto.com, it was two wires, so that is up and down, correct? Sorry, I don't have wiring diagram for your vehicle year? The closest I could get was 1990 for gmc pickup. If the wire colors match up, it may work?
I have a 1986 GMC 1500 with a 5.0 and stock rochester carb. The truck will start but you must keep gassing it as it won't idle. It kicks off every time. Any suggestions on how to fix this cold natured
fast idle speed screw, works off the fast idle cam which the choke adjustment sets, it works together by linkages. This is the raised idle speed setting you need to keep a cold engine running. First you set the idle speed by the idle speed screw with engine at normal operating temperature. Then you set the linkage up so the cam is on a raised step, throttle will be held on that raised step. then you can turn the idle speed screw to get idle at about 1500-1800 rpm. Now when you start engine cold, choke will set the fast idle cam on that raised step- when engine starts and runs it should be running at your fast idle setting. That's how it supposed to work, you just have to get everything adjusted right. I hate carburetors, they never stay adjusted right. Considering their complexity and small mechanical parts, no wonder.
I have a 86 gmc s -15 and I need to shift it from
Most shifts can be done on the fly by moving the selector breaking the power by lift ting the foot of the gas for a sec.. To really save on gas have locking hubs fitted to the front wheels and in the unlock position the vehicle is like a 2 wheel drive vehicle. Check the operators manual or down load it from the GHM web site.
Where is the fuel filter located on a 1986 gmc
i have a 1990 jimmy and it should b the same but follow the fuel tube
along the undercarage and u should come to the filter and then all u do
is unbolt the clamp and unbolt the filter and in goes the new one.. i have a 1986 S-15 JIMMY and found the fuel filter on the engine block. Located below the power steering pump, on drivers side.
Rear turn signals and brake lights out. Front
the brake lights and the rear turn signals should be the same bulb check the bulbs to make sure they are not blown does your third brake light work if all brake light are out and the bulbs are good check the brake light switch on the brake pedal
86 gmc 2wd 305 slight
This works with the 5 prong module on an HEI ignition system with the coil that is mounted on the top of dist. The wires that come out of the back of the dist go to a spark controll module under the dash and they are junk. There is a conector on the wiring harness about 5" from the dist unplug that conector and run a jumper wire from the green wire to the black wire on the dist side and make sure you tape up all wires on dist side to keep them from grounding out. On the other side of the dist where your 12V goes in (batt conection) there are to wires piggybacked on top of each other disconect them from dis and plug only the pink 1 into dist at the batt conection. Where the wires on the back of dist run into firewall there should be a vacume line disconect and plug on engine compartment side. Thats how you do the bypass and the spark control module can be removed from under the dash if you want to but its not hurting anything to leave it there. BEFORE YOU DO ANYTHING MAKE SURE YOU DISCONECT THE BATTERY. When all this is done you mite have to advance your timing 8-15 degrees. I had to advance mine 12 degrees. let me no if you have any problems. kyle yeo
Have a 1986 GMC Sierra 1500. Truck was starting
Hello
This can be either an igintion module or a igintion pickup (Located inside the distributor) problem. To determine which one you will need to run a fault code using the Data Link connector under the dash in front of the driver. To do this test and see a list of codes and what they mean please go to the web link below.
I have a 1986 GMC
If you look under the hood you will see the heater inlet/outlet hoses going through the firewall. The heater core is located on the opposite side of the firewall where those hoses are connected. You can fix this on your own if you have lots of patience and determination. The hard part is just getting to the core. You must remove enough of the dash to allow access to the core. Some parts may just clip on and others are held on with screws. Take photos as you go along so you can remember how to reinstall everything. This is a very labor intensive job and that is why this is an expensive repair if you have someone do it for you. The part is cheap, the labor is not. If you do it, then this is a good time to service the cooling system. Drain, flush, replace thermostat, and fill it up with a 50/50 mix of antifreeze and distilled water. Replace any hose that is suspect. Good luck.
Not finding what you are looking for?
