truck idles pretty well but as soon as you step on the gas, theres little to no power . it laggs and if you keep on the gas it will rev high and then start speeding up.I have replaced fuel filter,cap & rotor,spark plugs recently? anymore ideas?

truck idles pretty well but as soon as you step on the gas, theres little to no power . it laggs and if you keep on the gas it will rev high and then start speeding up.I have replaced fuel filter,cap & rotor,spark plugs recently? anymore ideas? 3 Answers

98 gmc 350 vortes new fuel pump.truck will start .when you shut it off should it have fuel pressure on the fuel rail mien dont it bleeds off as soon as you turn the key off what could this be 1 Answer

is there fuel pressure at the rail when you shut the truck off.my truck does not why would it bleed off so fast?? 350 vortec.

2001 GMC Sierra 4x4 sputters and surges as soon as it hits 40 and will continue unril you pass 50 mph. If you keep into the trottle and higher rpm than idel its ok. Let off it starts again. 2 Answers

Doesn't matter the load, grade, but if you put cruise on it helps abit.

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...

low beams went out, and high beams have started to go out to, if you move the wires the high beams will stay on, but still no low beams . What do I do? 2 Answers

The lights especially the low beams were not coming on. Now the low beams are out, but the high beams are still working, now they are starting to act up as well. Do I have a switch problem, or a wire...