20 Most Recent 1995 GMC Sierra C1500 - Page 11 Questions & Answers

u have a bad brake vacuum booster .mounts on ur firewall and behind brake master cylinder . good luck hope this helps

Haul the truck to the dealer ship and programe the key, you or some one else tryed to start the truck with some other key. Security is ON.

Not a valid question.

If you mean that you can physically push the vehicle and start it by popping the clutch in 1st gear there is a small safety switch when you press the clutch down all the way it presses in the switch which enables your ignition circuit to work. you can use a circuit tester with the key on one side will have power and the other won"t. Now if the switch functions properly when the key is on and the switch/button pressed in both sides should have power if not get a new switch or you could bypass it by removing the switch and connecting both wires together but I'd highly recommend replacing the safety switch as opposed to the alternative

Look up firing order and then check the order on your car .

yo man, idk if this is exactly what your problem is but my 1991 gmc sierra was doing the same fuckin thing and ****, and i took it to the gm dealer and had them look at it and my connectors and my ignition switchs were fried, also my truck was having a problem shitfing once those went but i also had that problem, perhaps yours is somehwta liek that as well... hope i could help

I would start by checking the ECM for codes.

You might find the pieces of harness at a salvage yard. Also you can use wire connectors available at ant auto store. Use a good crimping tool and wrap the splices with electrical tape.

It sounds like you have a vacuum leak somewhere. Take a propane torch, turn on the gas but DON'T LIGHT IT!!! Start the vehicle and point the torch at any and all vacuum outlets and hoses. If the engine revs up slightly, you have found your leak. The vacuum will pull the propane into the engine causing it to rev. Check the throttle body mounting plate good and vacuum lines at the back of the engine and transmission. Hope this helps.

the first things to check is going to be your fuel supply (try some starter fluid). if you know your getting fuel then you need to check for spark ( you can pull your coil wire and ark the spark to a ground) depending on the results there's many more things to trouble shoot

There is a possibility of getting of slightly cheap if problem is in valve body, but more than likely transmission will need to be removed and overhauled or replaced.

These and Blazers were notoriously hard to bleed the air out of the system. I actually had to make up a clutch reservoir cap with a nipple on the top so I could hook it up to a vacuum pump. With the system full, try to attach a vacuum pump (hand operated one works fine) over top of the reservoir, or if need be to the feed line to the master cylinder. Apply vacuum until you can see fluid, soon you should see bubbles in the line. Maintain constant vacuum until all air is gone the system should be fully functional after that.

do what i do and thats use a automotive meter ,first 12v permant supply then 12v from ignition switch ,and so on but be carefull not to use a supply for the autovolume but this is a 95 so it will not have any of these fancy devices ,the speaker wires are thinner and are coloured like say a blue and a blue with a stripe this will be one of the speaker wires ,black isnt always the earth so watch out for this and use the continuety test to determine the earth but the set will also earth out through the aerial though

These trucks had a lot of problems with the circuit boards in the tail light assembly . Your local parts store should have these in stock so there should be no need to go back to the dealer for the part

Check your fuel pressure.l Could be pressure regulator, dirty fuel filter, or weak fuel pump

On my '95 Sierra Fuel Pump fuse is in the engine compartment. Drivers side, closer to the firewall. Black cover, remove, you should find fuses and relays.

if there is engine oil inside bell housing dripping out the bottom. that is a good sign

loose wire or plug near your primary ignition system first place to check, then fuel filter next. If you need further help, I’m available over the phone at https://www.6ya.com/expert/michael_00678fd4800d19c5

your battery terminals needs to be change over or you have bad cell in battery.

it is definately a fuel problem, if you press gently it speeds up step on it and it just bogs, i think it has sommething to do with the ecm that controls timing and fuel at the TBI (throttlebody injectors) not a filter, i put a new pump,tank,filter and cleaned out the fuel lines and still could not cure the problem, then i heard of a few thigs that got me thinkin but when i was gonna tackle it a guy said he wanted to buy it so i told him the issue he didnt care and i sold it. but those were the only things left to do.