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  1. Scottydoggs

    "Soft" brake pedal when engine running

    you really need to have thicker skin. ppl aren't trying to bash you or nothin they are just giving an opinion regarding the help you "asked" for. when you feel well that reply dont apply, scroll to the next post. remember none of us are there with your truck, anything said is nothing more then...
  2. Scottydoggs

    Underpowered Possible vacuum leak

    with all them miles a clogged cat is a possibility. at idle you can spray some carb cleaner, flammable brake cleaner or the likes at the vac lines intake gasket areas, if the idle jumps up when you spray something, you found the leak area. normally with a large vac leak that you can hear...
  3. Scottydoggs

    No AC in front cab rear AC cold

    likely need to change the pass side actuator. (from the vids ive seen, it dont look like a whole lot of fun to change) iirc you can take the glove box out and see if the recirculate actuator is working or not.
  4. Scottydoggs

    Coolant leak back of engine down oil pan, driver side

    looks like its leaking from the head gasket. aka blown head gasket.
  5. Scottydoggs

    Real Benefits to 91/93 Octane in a regular LQ4???

    if you own a tuner (i own one, so its way to easy to play around) i ran 93 only in my 5.3, added some timing across the board and felt more power, and got better mpg. once 93 went back up to over 4 bucks a gallon. i tuned it back to stock and run 87 now. that first tank of 87 sucked so bad with...
  6. Scottydoggs

    AC has me stumped

    if the clutch dont spin the fans wont come on 100%, theres a sensor at the fire wall near the ac tank thing, if that goes bad it wont turn the clutch on, providing its got refrigerant still. no refrigerant no clutch turn.
  7. Scottydoggs

    2004 Yukon - adjustable pedals not adjusting anymore

    if the heated seats and seat memory buttons still work the switch in the door likely needs to be replaced.
  8. Scottydoggs

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    some of us resemble that comment. i still use my aol email from ohhh 30 years ago or longer lol
  9. Scottydoggs

    "Soft" brake pedal when engine running

    you can try re bleeding the master, (pump the brakes crack the lines off the master as if it was a bleeder) then all 4 calipers again, if that dont firm it back up, you might need a tech 2 to do a proper abs pump purge of air.
  10. Scottydoggs

    04 Tahoe z71

    yeah theres a independent one for the rear, blends hot and cold for the rear passengers comfort lol
  11. Scottydoggs

    04 Tahoe z71

    theres a blend door actuator behind the pass side rear plastic panel. they go bad. had to change mine. the plastic all comes off pretty easy and the actuator is in the wide open to replace. theres vids on yt.
  12. Scottydoggs

    Possible Vacuum Leak, With Graphs

    looks ok to me really. if you had a large vac leak the ltft would be pegged at +20 keep in mine, the plus side is adding fuel, so its lean and the pcm is making it richer. all normal. on a cold start the engine is running in open loop aka the pcm is running it till it warms up some, then the...
  13. Scottydoggs

    2003 Tahoe Lt airbag wiring.

    so the air bag is gone and your tryin to fake out the system? why not try ohm'ing the air bag at its plug ports see what resistor you might need?
  14. Scottydoggs

    Possible Vacuum Leak, With Graphs

    cats could be on their way out. only two things make the cel flash, needing a tune up like super bad, or the cats are clogged up. flashing light = multiple misfires. aka all of em or most of em are misfiring.
  15. Scottydoggs

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    nah, they got a rainbows worth of colors these days. gloss and the old school matt finish. stuffs not cheap. buy on line. look for the taller cans. iirc i got 6 cans for like 65 bucks, the larger cans too. the short cans are like 16$ a can at the parts stores and home depot. one tall can will...
  16. Scottydoggs

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    i could not stand looking at the missing clear coat and paint on my hood. so i tried plastidip gloss on it and the wheels. cause the wheels looked like dog ass too. im not to happy with the hood, but the wheels came out dame good.
  17. Scottydoggs

    Harmonic Balancer install?

    most will use a pry bar on the flex plate teeth to the block to keep the engine from rotating. or the air gun deal does work. the crank bolts is supposed to be tty one use only why the installer is nice cause its a 18 dollar bolt.
  18. Scottydoggs

    Rattle in the steering wheel after gravel road

    yeah that green part. ive also heard of the intermediate shaft causing a rattle. if lubing it quiets it down, its likely work out.
  19. Scottydoggs

    400th 'front axle not engaging' problem

    if the drive shafts spinning but not the front tires it could be actuator in the front diff.
  20. Scottydoggs

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    have you or any shops pulled the pcm plugs off yet to look for corrosion or a bent pin, or a bad wire leading to its plug?
  21. Scottydoggs

    Rattle in the steering wheel after gravel road

    at the base of the column inside the cab, where the shaft enters is a bearing. they can fail over time and will rattle. you can reach under and grab the shaft, push it up and down side to side, if you feel play its left the chat. should you be changing it be careful, as its got some sharp edges...
  22. Scottydoggs

    Traction control locking on from a stop

    could also be a bad ebcm. its under the truck pretty much under the drivers seat.
  23. Scottydoggs

    5.3L cylinder head. Which side should be normal?

    pcv valve is on the driver side, might be why its darker. are there at least some pools of oil in the pass side head? looks a bit dry.
  24. Scottydoggs

    Startup problems

    starters go "click" when they are bad. try hitting the body of the starter with a hammer a few times while someone holds the key to crank. if she fires up get a new starter, the hammer blows are a temp fix.
  25. Scottydoggs

    The Dreaded P0300 Code: Solved

    if you go out and floor it wot and the cel starts flashing, with your miles id be checking the temp of the cats. clogged cats cause the misfires, (or you need a tune up super bad) only code you'll see is the p0300 and thats only if you scan it running still after the event. restarting the engine...

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