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  1. General Chevy & GM Tech Questions
    Hello All! Does anyone know what this part is: The rigid line that comes off of the "pointed out" port has broken and I need to identify what this valve is in order to get a new line. The line is rigid, with multiple bends, and heads from the passenger side (where his valve is) over to the...
  2. Chevy Silverado Forum (GMC Sierra)
    About to run this b**** into the boat launch and claim insurance. Jk but it’s driving me insane I’ve changed plugs, wires, coils, injectors, O2 sensors, I’ve reset ecu, I’ve run a fuel pressure test here are findings Truck at idle holds at 60psi fuel pressure WOT ( wide open throttle) blip...
  3. GM Powertrain
    96 tahoe 2 door i did the mpfi about 2.5 yrs ago and num 2 injector got stuck open .. replaced it and now cyl 7 is missfiring plug looks fine and wires look fine i tested 3 of them all fire but i am also seeing the bulb light up as the motor cranks in the 2 pics attached the brighter light is it...
  4. Chevy Silverado Forum (GMC Sierra)
    Hey all, i have a 2002 GMC Sierra 1500 with a 4.8 Vortec engine (rust-seized) and transmission that skips second gear which may or may not be due to low fluid. It rusted because I had it sitting at home during college, I had no money or time to maintain it, and now won’t turn over. I have it...
  5. GM Powertrain
    Hello im having a little trouble on what wiring harness i need to get. im 19yrs old and i just pulled my first motor its a 5.3 ls out of a 2001 suburban which im swapping into my 1994 1500 4x4. it has a 4l60 and when i look online all they have is 4l60e wiring harness its probably a stupid...
  6. Chevy C/K Truck Forum
    Ok so I'm new to chevys, new to California and this is my first rebuild. I got a 95 chevy k1500 Silverado 5.7L V8 350 with TBI, taking old motor out, still runs but want a bit more power. Am I able to put vortec heads from a 96 on my 95 block? Or just swap out with the 96 and be able to pass the...
  7. Chevy Silverado Forum (GMC Sierra)
    My 2003 5.3 Silverado has no cats and a thrush welded muffler. Recently I had to drive a long distance so I replaced the Thrush with a stock muffler. After the trip, I put the Thrush back on, and the drone is much louder and a lot less bearable than before I reverted to stock. The only...
  8. Chevy Silverado Forum (GMC Sierra)
    Does anyone know off hand if there is a location other than the sending unit to hook a mechanical gauge to check oil pressure? I have low oil pressure at idle, replaced the sending unit yesterday, no improvement. I know they made changes to the block so information on older generations probably...
  9. Chevy Silverado Forum (GMC Sierra)
    Hello. I have a 2004 silverado with the 5.3l vortec. Check engine light is on with code P0327 (knock sensor 1 circuit low). Before I take off the intake and replace it, I was wondering if someone could tell me what steps to do to verify it's the actual sensor itself and not something else. I've...
  10. Chevy Truck Talk & GM News
    HELP! My 2007 Yukon XL is giving me such a headache. Parked it a year and a half ago after it started doing all kinds of crazy things, after it started acting up we tried a few things (new plugs & wires, new fuel injectors and rail, checked coils) and none of it helped so we assumed that it...
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