20 Most Recent 1986 GMC S-15 Questions & Answers

at school and learning about vehicles
good move ---now the next good move is to get a workshop manual for the vehicle and read it thoroughly as a working knowledge of vehicles is only learnt from trial and error after reading it from a book
you first lesson is learning what firing order is and seeing that the cap is on correctly and the wires are going to the correct plugs

1986 GMC S-15 | Answered on Jul 02, 2017

radio doesn't work. she got out of the car, the quit she got back in and the radio was dead. fuse 56 a 20 amp fuse is good, 6 a 5 amp fuse is good. 20 is a 10 amp fuse is dead with the fuse is good. could the door switch has somthing to do with it.

1986 GMC S-15 | Answered on May 07, 2015

My first guess would be a very bad vacuum leak, second guess would be fuel starvation. Check hoses for cracking ,breakage, check fuel filters from tank to engine. GOOD LUCK FRIEND.

1986 GMC S-15 | Answered on Apr 17, 2015

Base radio: 15A RADIO BATT GUARD FUSE 8 and 10A CLAMP 58 FUSE 26 in the fuse block.

Bose radio: Above plus 30A RADIO FUSE 6 in the fuse block.

1986 GMC S-15 | Answered on Jul 04, 2014

hi, If the radio is an after market there may be an inline fuse plus the one in the fuse panel. check for power at the radio with a test light also check the ground.

1986 GMC S-15 | Answered on Jul 03, 2014

The pump uses a relay and a fuse. The relay should be near the brake booster and the fuse should be in the fuse box.

1986 GMC S-15 | Answered on Apr 03, 2013

Things you need to check:
1. is there enough fuel in tank?
2. You can hear fuel pump motor running? If your car has electronic fuel pump then most of the time these pumps are the main culprit. Its fitted inside the tank and you can hear its sound when you switch on the ignition key. Open the fuel filler cap and try to hear from there. If you cannot hear, check for fuel pump fuse under the hood. There should be a fuse box with diagram showing which fuse is of what thing in car. If nothing works, you probably need to replace the pump.
3. If your car has manual pump (not electronic) then you should see a roundish thing under the hood connected to engine in which fuel line is coming from tank and then going to carb. Pull out the outlet pipe and crank the car for 10 sec. and see if you get any fuel. If not then this manual pump should be replaced.

1986 GMC S-15 | Answered on Feb 04, 2013

Have you checked for spark or tried shooting carb cleaner in the intake to see if it will fire?

1986 GMC S-15 | Answered on Jan 17, 2013

Do you get dash warning lights when you turn the key and no crank ?
One possibility is the ignition switch, another is the starter. If it has an automatic trans, there is a neutral safety switch to keep you from starting the engine in gear.

1986 GMC S-15 | Answered on Jun 25, 2012

most people find this out after they put their boat in water.
good time to service the rear brakes seeing it all has to come apart to change the cables. chances if the cables are siezed the rear adjusters are too!!!!!!!!!

1986 GMC S-15 | Answered on Feb 02, 2012

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