Will run on either.gas gauge reads empty with full tank.fuel pump won't run. No signal to fuel injectors. Ran fine turned off 5 min later no run. Gas gauge was working, now not. New fuel pump done, no luck. Fuel pump will run if jumped, but still no run. Repeat will run on either, but quits when either runs out. Very confused.

Replaced throttle body gasket wasn't it then replaced throttle body it self because only water goes through intake is two lines on bottom of throttle body that wasn't leak either and there's no water in oil at all and its 5.3 engine help please

The truck went into neutral going down the road. I coasted to the side ofr the road and tried to put it in park, I heard this God awful grinding noise, like you are shifting a standard without pushing the clutch in. I truned it off in neutral,put it in park and restarted and it went good. it has happened twice now.. help me please..

I've had this truck for about 6 months. When I first got the truck I left it idling for about 45min shut if off then it wouldn't start. Battery was good. took to dealer they found a short in the wiring harness. A few days ago had a similar experience with it not starting after letting it idle for an hour. It smelt as if something had gotten hot.

Motor has no oil pressure

with a full tank what could be the problem ?please help

makes that grinding sound like they do when they first go out, It's done it twise a couple of week's ago and did 3 time's yesterday is it the ignition switch or the starter

Front right bucket seat has something loose on the backside of the seat. I want to take off plastic panel to see what is in there. Looks like it pops off. Didn't want to tear it up as it is a nice pickup. Drives me nuts driving down the road. Love the 6.2 ,Gets better mileage than my 5.3 did. Think the 5.3 was over geared for fuel economy. Thanks

When I turn the key on the ON position the lights on the 4wd selector switch the buttons come ON then go OFF. Then the SERVICE 4WD light comes on. None of the buttons responded. I have another 04 gmc sierra 4wd I took the tccm and put it in and still the same lights come ON when turn the key on then go out and no response when I push the buttons. I replaced the encoder ring and same thing. I swapped out the 4wd selector switch and still nothing the only thing i haven't tried is replacing the transfer-case shift motor or the front axle actuator. I also cleaned the grounds on the frame that are underneath the driver door. i went to a couple shops and they want $150 - $200 just to hook up the scanner and diagnose the problem.

leaking bad need to put coolant every time i drive somewhere

on my 2007 gmc sierra i have a problem with the driver side rear lights my brake light works fine my directionals work fine but my daytime running lights do not work my question is is there a seperate fuse for drivers side rear and passenger side rear i cant figure out why the lights work fine for brake and directional but not running lights.btw the running lights dont work at night either but everything else does.

When I turn the cruise on the light comes on on the steering wheel control but I am unable to set the cruise control. It will not kick in. What is involved to fix and a possible cost for the repair.

when trying to shift in to 4wd high light blinks then goes back to 2wd.can hear it trying to shift but wont.never had a maesage say service 4wd or any thing. worked in auto and 4wd high just a couple weeks ago.

When I'm accelerating it bogs out at 45 mph ideas on what to do?

First flushed the heater core and changed the thermostat heat worked for a few hours then stopped.. Just a bit ago changed filters and circuit board worked for an hour! All doors are opening as should it's just blowing cold Both hoses are also hot

During the hot of summer, the AC settings do not blow any cold air. The freon is full and the fan runs, just only pushes out hot air. During the winter the heat doesn't work, again the air comes through from the fan, but cold as can be. More or less it just seems to fan in the outside air whatever it is.

And some of the light on dash want show up either like high beam abs or odo

the 4wd electric switch shows no indication of which it is in (im guessing 2wd). i have replaced the switch and actuator, neither was the problem. im running out of ideas, is there something i am not thinking of.

I warm engine to operating temp(210*) but heater blows cold air until I begin driving then works as it should. One heater hose is hot while other is cold at idle. I'm thinking plugged heater core but it just turned 40,000 miles. Is there a valve in the system?

my transmission was taken out to be rebuild and the neutral safety switch was damage now im trying to color code my wires from the horness as well as to the transmission control unit.im getting the reading of a po700 manfuntion and the truck wont start or even get any fire to the engine

When I try to put in four wheel the light won't come on but sounds like it goes in ? I'm not sure what is wrong?