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  1. SLCHOE

    Trying to pass smog in cali :(

    1) You don't need to go to the dealer to have the latest calibration flashed. You can go to anyone with a subscription to GM's TIS service and has a compatible J2534 pass through tool. 2) Updates in calibrations are issued to correct problems that arise as the years pass for late model...
  2. SLCHOE

    Truck threw 3 codes

    If only it were that simple. :) You need a diagnostic performed. Lean codes can be as simple as a dirty MAF sensor, vacuum leak or plugged fuel filter to more expensive repairs like leaking intake gaskets or weak fuel pump to name the most common. Looking at the engine live data with...
  3. SLCHOE

    No fuel, Spark Ok!

    I'd say you are correct with the pin 87 diagnostic. If you applied 12v to that pin that should have powered the pump. Have you tried banging on the bottom of the fuel tank with a rubber mallet while someone else is cranking the engine? Usually if the pump is not totally frozen the banging on...
  4. SLCHOE

    Filled up and Idling crazy

    Yep, unrelated. Charging system issues.
  5. SLCHOE

    Book time for engine replacement?

    Out the top if it's stock height or lowered. If lifted, remove grille, radiator/condensor etc. and out the top/front.
  6. SLCHOE

    Trying to pass smog in cali :(

    Does your ECM have the latest calibration?
  7. SLCHOE

    LOUD clunk turning in 4wd

    Never had a problem with the top bolt using a standard length wrench using the 12 pt. box end. You don't get much throw with it but you can get a few turns out of it and then squeeze your hand up there to finger it off the rest of the way usually.
  8. SLCHOE

    Buying 2005 Yukon 4.8

    How many miles? Private or dealer sale?
  9. SLCHOE

    Hesitation on acceleration, lurches forward

    What codes are you getting when the check engine light comes on? If you don't have one, get yourself a code reader/scan tool. If You have an android phone, there are a few good ones out there for about $100 otherwise a pretty good one is the ELM327 found on amazon...
  10. SLCHOE

    Book time for engine replacement?

    Wait till the spring and have a few buddies come over and knock it out I hope that is a new engine. :)
  11. SLCHOE

    Book time for engine replacement?

    It's about average for a V-8 engine replacement really. I'm doing a reman swap on a 2000 Camaro 3.8L V-6 right now with the same labor time.
  12. SLCHOE

    2wd to 4wd

    You need the whole throttle body assembly. You cannot just replace the TPS. Have you tried cleaning the throttle plate/throttle body with carb cleaner and then removing the negative battery cable for 5 minutes (this induces a TPS relearn)? What exactly is it doing (symptoms)?
  13. SLCHOE

    Book time for engine replacement?

    No problem. Those figures do not in include sales tax, haz mat fees, materials fees and the such.
  14. SLCHOE

    Newbe here, radiator cooling fans not running on my 2005 yukon denali

    Do they come on if you turn your A/C on? You replaced the Engine Coolant Temperature switch?
  15. SLCHOE

    Book time for engine replacement?

    OK was just making sure. Labor time shows 14.8-16.3 hours depending on the three options listed. Most shops are about $100/hr. In labor alone you're looking at ~1500. After thermostat, plugs, coolant, oil/filter, misc items you're probably looking at almost $1800.
  16. SLCHOE

    Book time for engine replacement?

    Year? Engine Size? 4WD? Used engine or Reman?
  17. SLCHOE

    P0171/4 and misfire

    That is pretty great evidence of a intake manifold gasket leaking right there. LOL.
  18. SLCHOE

    4WD Switch?

    It will fail back to 2wd. If the 4WD is not responding, you are stuck in 2WD.
  19. SLCHOE

    4WD Switch?

    It's not the switch. It's 99% the encoder motor position sensor.
  20. SLCHOE

    4:10 Gear ratio

    Gear ratio on most vehicles affects rotor size and therfore pad size.
  21. SLCHOE

    P0171/4 and misfire

    First off determine if it is indeed a vacuum leak. If you have a scantool that probides live data, watch your STFT/LTFT for both banks. Pull up your data for LTFT on both banks (graph the data if you can). Let the engine idle for a minute or two. If the LTFT is still high watch the data as...
  22. SLCHOE

    Trying to pass smog in cali :(

    No. You weren't.
  23. SLCHOE

    P0171/4 and misfire

    You need to know your LTFT at idle for both banks. If over 10+% it's excessive and adding 10+% more fuel to keep it running properly than normal. This means you have an issue. P0171/P0174 combined with misfire codes on these vehicles usually leads to intake manifold gasket replacement...
  24. SLCHOE

    Trying to pass smog in cali :(

    Unless you are going to a shady shop, recommended work is recommended before it gets to a point where it is crucial. On any vehicle there are items that wear over time and progressively get worse. Our job is to notify you that those oparts are worn and WILL NEED replacement. Not this exact...
  25. SLCHOE

    Best Online Resources?

    You're welcome but mind you the first 4 on my list are pretty expensive if you are just a DIY'er (some are hundreds of dollars a month memberships) . If you are a DIY'er the best resources are OEM Service Literature and a vehicle specific membership to a forum that specializes in the vehicle...

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