GMC Sierra 1500 Questions Maintenance & Repair

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What Is The Voltage Supposed To Be At The Fuel Tank Sending Unit Plug On A ...

My fuel gage is reading half-scale. The unit was changed today and it still does same thing.


I Have A 1989 Gmc Sierra Sle 1500 5.7l Tbi. The Fuel Gage Reads Half-scale ...

The gage maxes out when grounded and zero when no load is on it. Other than purchasing a variable resistor set up to check the gage for an accurate reading, I'm assuming the gage is okay. Is there any...


Battery Wont Charge

alternator is good, dashboard gages wont work, all fuses are good


Vehicle With Start But Only Runs 20-30 Seconds Then Dies

recently installed a new multi function switch, everything went fine, everything worked. Couple days later truck dies out of the blue. I am thinking battery or alternator, so charge the battery an...


My 94 Gmc 1500 V6 Started Fine .than Stopped And Wouldn't Start .just Click...

Disnt burn any wires .but now it won't even turn over .just pops under dash by brake padel


I Have Replaced Fuel Filter Still Code 44 What Is Next

i have 1990 gmc 5.0 getting code 44 seems like it is not getting fuel when problem comes i can shut truck off and restrart it it clears up for a while then comes back is it bad fuel pump

14 views with 2 answers (last answer 4 days ago)

Why Is My 1990 Gmc 5.0 Motor Backfiring It's A Throttlebody

It runs fine for a while and then when we're out on the highway it starts cutting out and acting like it's going to die or get no gas and it backfires

7 views with 2 answers (last answer 5 days ago)

Code 22 And 44

have a 1990 gmc code 22 and 44.. but the check engine light only stays on for about a minute..and thats when it idles high..but if the check engine light is on when i park and i put it i...

21 views with 5 answers (last answer about a week ago)
Corneilius Nubugustrious

Having Hard Time Getting Truck Into Gear (drive) From Park. Is The Brake Pe...

I suspect the brake pedal position switch or the one that tells the truck you have foot on the brake pedal. Is this switch adjustable?

8 views with 1 answer (last answer about a week ago)

What Is The Advance Timing For A 1988 Gmc Sierra Sle? It Is A V-8 With The ...

Just bought the truck and am trying to tune it up. Just need to know what the advance timing is supposed to be.

15 views with 1 answer (last answer about a week ago)

Brake Problems 88 Gmc

I have a 1988 Gmc Sierra 1500 , it is lifted and has 35s . my brakes are soft. This is after i replaced the brake booster , and the master cylinder. Anyone have any ideas I don't know what to do nex...

34 views with 4 answers (last answer about a week ago)

Battery Light Comes On Driving Down The Road.

Battery light comes on driving down the road including brake warning light and ABS light. Had alternator (new last year) and battery (new this year) checked with now issues on either. Not sure if ther...

15 views with 1 answer (last answer 2 weeks ago)
Pamela Hilderbrand

Where Is The Fuel Pressure Regulator Valve On Gmc 2001 Ext Cab 4x4

i need a pic or pics of the wiring of the rear brake lights ...truck was running rough missing and jerking acting like had water in gas....stalled out and now will not start at all i was repairing t...

11 views with 1 answer (last answer 2 weeks ago)

My Neighbor Has A 1990 Gmc 1500 350 Automatic. Recently Is Started Runni...

If you unplug the injectors, it will finally fire up and run till it runs the gas out in the intake. If you plug in just one injector after its started it will continue to run.. but if you plug bo...

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