my 1999 gmc sierra wont start when it gets hot. I have to wait about an hour for it to cool down and then it will start. I've been told that it is an electrical problem. I changed the cap and rotor, spark plugs, and cables thinking that would solve it but that didnt. please tell me what i need to change for it to stop doing that?

my 1999 gmc sierra wont start when it gets hot. I have to wait about an hour for it to cool down and then it will start. I've been told that it is an electrical problem. I changed the cap and rotor, spark plugs, and cables thinking that would solve it but that didnt. please tell me what i need to change for it to stop doing that? 1 Answer

I HAVE A 1994 GMC SIERRA 2 WHEEL EXTENDED CAB THE TRANSMISSION WOULD ONLY SHIFT FROM 2 TO DRIVE DROVE LIKE THAT FOR A WHILE THEN IT STOP PULLING ALL A CERTIAN COULD SOMEBODY TELL ME WHAT THE CAUSE 6 Answers

THE TRANSMISSION WOULD ONLY SHIFT FROM 1 TO 2 BUT IT WOULD NOT SHIFT TO DRIVE OR WHEN YOU GO TO DRIVE IT WOULD STELL BE IN 2 DROVE LIKE THAT FOR A WHILE BUT ONE DAY COMMING FROM CHURCH THERE WAS A CLU...

04 gmc sierra 1500 5.3 died on me on the highway got it towed home starting going at it, hooked two different scanners to it and not throwing any codes (ecm is working bc the map was reading correctly but also the rpm was zero) anyways checked fire none checked injectors they wasnt working either(built fuel pressure then unplugged fuel relay then turned engine over and the pressure stayed the exact same) i assume it might be the crank sensor but i would think it would throw a code, anyways came back this morning and before doing anything for the hell of it i checked the gas cap and tightened it and it fired up perfect three different times and the last time i let it run and it died after bout 45 seconds (fuel pressure reads 55) and after it died its doing the same thing cranks but wont fire or start 1 Answer

died on me on the highway got it towed home starting going at it, hooked two different scanners to it and not throwing any codes (ecm is working bc the map was reading correctly but also the rpm was...

I had a code 700 when I diagnose my 94 GMC Sierra. That is a transmission control unit problem. What's the best and cheapest way to fix it. can I do it myself? 2 Answers

I was going 65 70 on the freeway When I noticed I smelt burning wires. the truck then kind of held back power while my foot was still on the gas . it does this every now and then feels like its l...

i haven't started my sierra 100 5.3 v8 for about 10 months. Will it be alright to start it when i put the new battery in it ? 1 Answer

It has about 1/4 of a tank. It was maitenance very good before i parked it. Oil Plus cables ect.