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  1. PNWYukon

    2005 Yukon Whine Noise Associated with Tach Speed - HELP!!

    Transmission pump or Torque converter will need to be ruled out. From another Forum: The pump is turning with the engine so it's always pumping fluid. In park and neutral there is no demand so a cavitating pump will make noise but it will be louder in gear. When diagnosing transmission noise...
  2. PNWYukon

    2000 Z71 shut off while driving

    Spark plug popped out of the engine? Any check engine light? Is this the first time this has aver happened? Only after doing plugs and wires?
  3. PNWYukon

    New Owner of 2003 yukon denali, with 307000 kms

    Hope you got a warranty from the transmission person. Going that deep into a transmissions rebuild, you would think valve body solenoids would have been replaced along with all the other springs, o-rings, seals. "he is very sure it's not his transmission that is causing the problems", Said...
  4. PNWYukon

    Spark plugs

    NGK 7397 Iridiums and Denso wires 6718063 from RockAuto. Cost about $80 and they perform flawlessly.
  5. PNWYukon

    New Owner of 2003 yukon denali, with 307000 kms

    I saw that plug hanging out of the grill. You must live somewhere very cold. If in the rust belt, then all grounds are essential to check and reseat. As for the code for the 1-2 shift solenoid. They fail occasionally, so it could be that easy and they are not expensive. I want to say that you...
  6. PNWYukon

    2001 Burban, almost no oil pressure even after replacing the oil pump

    from: https://dannysengineportal.com/engine-oil-sludge-is-caused-by-your-engine-oil-breaking-down/ "The simplest solution here is to use a, chemical engine sludge remover. There are some sources that don’t really like them; but they are the easiest way, to get rid of sludge. They are typically...
  7. PNWYukon

    05 Tahoe and 03 Yukon swap

    Have you scanned for any codes on your transmission? What do you mean by no 3rd gear? It could be something far simpler than swapping the entire drivetrain. It could be something in the valve body of the transmission.
  8. PNWYukon

    2006 chevy Tahoe problems

    Here's a few of those codes and what they mean for your rig: L59 : ENGINE, GAS, 8 CYL, 5.3L M30 : TRANSMISSION, AUTO 4 SPD, HMD, 4L60E, ELECTRONIC GT4 : AXLE REAR, 3.73 RATIO (DUP WITH 5 X 1) G80 : AXLE POSITRACTION, LIMITED SLIP JH2 : HYD POWER, DISC/DISC, 7,200 LBS KUP : THROTTLE CONTROL...
  9. PNWYukon

    4l60E slipping/being erratic.

    Go under at look at your clearances. I had to drop the crossmember and lower the transmission just to get my servo out. I still had to beat back the heat shield a little too.
  10. PNWYukon

    2006 chevy Tahoe problems

    Oh no, that could mean they have done a lot of extra wiring in there and something could be messed up. If the ODB port is not working check the fuses first. Maybe peek under and see how the wiring looks on the back of the plug too.
  11. PNWYukon

    2006 chevy Tahoe problems

    That sounds like a bunch of little problems. Air conditioner problems can be frustrating and expensive. You really should find a trustworthy local mechanic that does A/C and have them vacuum test the system and recharge it. You really need to find a diagnostic tool/code reader and see if it can...
  12. PNWYukon

    4l60E slipping/being erratic.

    Like many of us on here, it is a matter of course to replace parts that are 15+ years old. It is really how much you want to do for updating versus waiting until something breaks. I have not heard about timing chains breaking, but it depends on what the previous owners did to it. Hotrodding...
  13. PNWYukon

    2003 Ta’Hoe—Fuel issues

    In retrospect, do you think the problem was only the APP sensor?
  14. PNWYukon

    4l60E slipping/being erratic.

    You replaced the entire valve body? Did you inspect the separator plate? Did you inspect the accumulator pistons and springs?
  15. PNWYukon

    Heat on 82° only

    Depending on your particular system there could be 4 actuators in your dash. As @Colby_e32 said one of the temp actuators is just right of center of the dash at the floor. If you have a full console it is a bee atch to get at. The kick cover has a bolt/screw there that is very tight to get at...
  16. PNWYukon

    2002 Tahoe AC stuck on program/learn mode

    What are the code numbers?
  17. PNWYukon

    Heat on 82° only

    Do you have any HVAC related codes? It works fine on some settings? Seems like the blend door actuator would be controlling that.
  18. PNWYukon

    2005 Tahoe/Fuel filling problem

    On my 2005 Tahoe I started getting the tighten gas cap message and occasionally the gas pumps at Safeway would kick off, but not at ARCO, but at Shell and not at Fred Meyer. I cleared the Gas Cap Code and it came right back. I spent a few bucks on the easiest things first; Vapor Canister Purge...
  19. PNWYukon

    P0171 Most Common Cause W/O Driveability Issue

    Get that buttoned up and you should be good to go.:happy107:
  20. PNWYukon

    P0171 Most Common Cause W/O Driveability Issue

    P0171 code possible causes Intake air leaks Faulty front heated oxygen sensor Ignition misfiring Faulty fuel injectors Exhaust gas leaks Incorrect fuel pressure Lack of fuel Faulty Mass Air Flow (MAF) sensor Incorrect Positive Crankcase Ventilation (PCV) hose connection
  21. PNWYukon

    4l60E slipping/being erratic.

    If you are going to replace check out this one: https://spprecision.com/products/4l60e-transmission-for-sale.html
  22. PNWYukon

    Weird electrical problems

    What is the total draw amount? Have you traced all the grounds and reseated them? Have you taken the fuse box apart and looked at the underside? Set up your meter and get the draw amperage then start unplugging fuses until the draw is eliminated. That should narrow the issue. If you are...
  23. PNWYukon

    What do i need to do immediately?

    Front to back all services.
  24. PNWYukon

    Dorman VS ACDelco VS Duralast VS NAPA VS?????????

    Application: 2005 Tahoe w/electric fans Advance Auto Parts Radiator part #432298 (CarQuest Premium Radiator, Limited Lifetime) $208.99 Original one split near the top, this one has been good so far.
  25. PNWYukon

    Transfer case whine

    What is the transfer case ID? NPxxx? Have you ever changed the fluid in it? Does yours have the Auto4wd button? That adds to the complexity of the internals. Many times the oil pump pick up tube gets clogged with silicone or debris causing issues, but you can't know without opening it up or a...

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