GMC 1500 Pickup Questions

Get answers to questions about your GMC 1500 Pickup at RepairPal. Find solutions, diagnose problems and get back on the road.

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4.3 V6 automatic trans

highway mileage is bad. engine runs strong and does not use oil.

Ok here is my store. Have had the truck for 15 year. Daliy driver. Stopped driving it about a year ago. Only on the weekend. 6 months ago I put in a new starter and a new distributor due to it blowing ignition fuses. 2 month ago. I had to jump it to get to work. Got to work and it would not start again. The battery was old and not holding a charge. So it stat still for about a month. Just got a new battery but now it won't turn over. I did a tune up on it just to make sure but still won't turn over. I checked the coil and plugs for spark and it dose have spark. It has gas(half tank). I can smell and see fuel in the throttle body so fuel is getting to the injecters. But still won't turn over. It wants to but doesn't. Any ideas or area to look at. Also I do have a msd ignition on the truck.

I checkd fuses but radio want power on light on. Radio is out & no sound but the eject button if pushed makes sum kind of racket liket its getn power

Also left window not working & gauges action funy

new plugs wires new coil new fuel pump assymbly

Truck failed emission test at the smog. I replaced the rotor cap, spark plugs ect. But still has a problem. Put a new Egr in. Nothing changed. Truck has a crack before the o2 sensor, timing is off by 10 points. Was wondering why im still having a problem trying to pass smog. The smog people told me that my car is burning "Rich".

I have changed the bulbs taillight bulb board and nothing. When I turn on the left blinker it blinks double and the reverse light on the right side blinks. Is my problem in the swicth or where?

Did tune up. Checked fuel. Everything is good just won't start


Was blowing the fuse when using the left side turn signal. Replaced all the bulbs. Now blows the fuse when using the right side turn signal but not the left??

This light just came on. I keep my vehicle upkeep right on schedule. Does this mean I need new brakes, rotar. Also, IS IT SAFE TO DRIVE?

My gauges are not reading right and it loses power if I run any accessories. Its not the alternator or fuses.

when Gona drive off frm the stop wants to shut off,runs good on a kind run.just when coming to a stop.

80% of time

The truck dies a lot in the summer. It just dies.

what is aradio battery

I have a 1998 gmc sierra and both the inside and outside handles are broke and cannot get the door open and I have part of the inside panel off i pull the bar that goes to the latch but fell like it is broke or dissconnected

Occurs daily once truck is warm. Doesn't happen when it's cold or short distances. Stops squealing at about 1500 RPM.

Throttle Foot pedal goes to the floor and springs back with no problem. Removed the air cleaner and throttle works like it should.

No voltage from the signal wire. Help Brad

Ok I'm asking this yet again I am stuck in 4*4 low truck will not shift outta it I've changed the transfer case and all componets on the trasfer case , the transfer case control module, the inside truck switch which it is an electric shift 4*4 not vacumme I removed motor and can shift transfer case manually but why won't it shift with the buttons I've checked the actuator on the front drive shaft its fine checked all electrical its fine when the truck is off completely with key out of ignition you can still hear the transfer case trying to shift when trucks running and in n the transfer case sound is louder someone plz help.

Dash display light comes on but when finger removed light goes off and cruise wont work

Truck stopped running so replaced the relay fuel pump fuel filter and got it to start for a few minutes before it died. it wouldnt hold an idle and wouldnt start for a whole day now it will only stay running when floored. Then it floods with gas and spits out lots of fuel out of the exhaust pipe. Not sure what to do. Had a friend look at the fuel injectors and break one of the rings. not too sure if they got replaced or not. We also replaced the spark plugs rotor and cap.

Sometime it shakes when we just leave the house and then after awhile later like 10 to 15 miles later then the vibrations start so I greased the steering alignment an it stills does it an the gear box looks separated kinda I thinks too

After my truck died in some real bad rain I replaced the distributor cap, wires, and plugs. Then there was no fuel pressure! So I replaced the fuel regulator (on spider injector), fuel filter, and fuel pump. She had great fuel pressure, spark and compression! So now I'm at the anti-theft passlock feature. I read some blogs / watched some YouTube and went for the resistor bypass option. My electric testers couldn't get a reading from the the yellow and orange/black wire so I used (5) 47 ohm resistors. When I turned on the engine the security flashed. So I completed all 3 steps and she started, momentarily, and died. The next morning the engine wouldn't stay running. (Ready?) I disconnected the resistor and wrap the yellow wire around the orange-black wire! The security light hasn't turned off since! I've tried leaving it on for 10 minutes up to 60+ minutes with and without resistors but the security light is still on! The only relative fuse is in the drivers side panel and looks good! I really need some input! What next?