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  1. Merc1973

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

    Changed the oil @ 265k (High Mileage Full syn Super Tech 5/30 and Fram Ultra Syn filter). My lifters are nice and quiet with Super Tech. Replaced the oil cooler block off plate gasket, AGAIN and tightened much more this time. stupid leak... Found the source of my horrible steering: Steering...
  2. Merc1973

    She wiggles

    This and especially the rear panhard AKA track bar which keeps the rear axle centered under the truck.
  3. Merc1973

    New Front suspension/steering Questions

    At 260k my factory front end is shot. I have already replaced things that dont need alignment like pitman arm, idler arm and idler bracket, swaybar bushings and endlinks and shocks. I need to order the tie rod ends and upper/lower control arms. Im going with AC Delco Professional from rock...
  4. Merc1973

    What should stock ride height be? (So I know how much to lower it)

    Its better to measure center hub to fender. That way different tire and wheel sizes wont throw off measurements when comparing.
  5. Merc1973

    How To: Service/Replace ABS Wheel Speed Sensor

    I will be doing this tonight. Thanks for the write-up. I found this video helpful in diagnosing the ABS activating when braking. He repeats the same cause...corrosion. Go to 3:45 and he does the "quick and dirty test" for not using a scan tool to see which side needs to be replaced. Here's...
  6. Merc1973

    Reeee Dooooo!

    WOW, that looks awesome, great job. Looks like that was a $pendy project!
  7. Merc1973

    What's the "right" way to kill rattles?

    Took me forever to find out the 2 rattles in the back of mine. The loudest was my kids safety seats when they are not sitting in them. The other was my rear hatch glass with a broken off hinge. I JB welded it but it came loose again.
  8. Merc1973

    Fuel gauge stepper motor?

    I like how you marked the pointer location on the gauge. Wish I would have done that before when I had to resolder my PRND led resistors. My Speedo is a little off but at least it keeps from speeding too much now, lol.
  9. Merc1973

    Compatible AC Delco Iridium Spark Plug Replacement P/N

    Thank you!
  10. Merc1973

    Stock bottom end 4.8 out of high mileage Tahoe runs 7's in a fox body

    I found this on another fourm, thought I would share it here: At 3:40 of the video owner starts to talk about his setup (just before that you can see his run). 4.8 stock bottom end runs 7's at TX2K19 plus many more fast street cars.
  11. Merc1973

    Compatible AC Delco Iridium Spark Plug Replacement P/N

    Are the single or Double Platinum AC Delco ok to use?
  12. Merc1973

    Installing a steering damper

    Yup, My Grand Marquis had the same problem, I swapped the pump out for a non EVO pump and it was good to go.
  13. Merc1973

    Replacing shocks, 2000 Yukon

    Bilstein 4600!
  14. Merc1973

    Z55 Rear Struts shot/ Towing Advice

    I like the Z55 air leveling ability. See my signature. Arnott air shocks and a new Dorman air pump. I love it for towing and hauling the family, it never squats in the rear and rides great, not harsh at all!!! No problems after 3 years.
  15. Merc1973

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

    Finally replaced the pitman arm (AC delco-pro). It was my second attempt, last fall i replaced the idler arm and idler arm bracket and failed with the pitman arm (also AC Delco Pro). I removed the sway bar which gave me plenty of room to swing my mini sledge on the pickle fork this time. I...
  16. Merc1973

    Oil cooler block-off plate, among other leaks

    Thanks. I just did this. Super easy. The gasket is all metal now (AC Delco) Thanks for posting the torque spec!
  17. Merc1973

    2 Issues After Leveling Kit (04 Tahoe)

    In my experience with lifting jeeps. Whenever you get alignment issues with accelerating/decelerating the culprit is usually rear control arm bushings. Think about it. When you accelerate, your increasing torsion on the rear axle. and its going to want to twist if the bushings are shot. Since...
  18. Merc1973

    Autoride shock lifespan?

    When I got my Yukon it had 215,000, it had the original orange Delphi auto ride shocks, they were trashed. lol
  19. Merc1973

    2005 tahoe no sound from speakers

    I also have this problem with my factory BOSE system. Got in the Yukon to go to work and NO sound from radio. Is it the AMP most likely. I will check the amp fuse. I would rather not replace the head unit since I am happy with the way it normally sounds, pretty damn good for a 15 year old...
  20. Merc1973

    A/C not working after new parts.

    Go out again, numbers look low, must be a leak.
  21. Merc1973

    A/C not working after new parts.

    Update, after a beer to relax. I went out there, hooked up the gauges, the compressor runs, but But both are reading as if it low on freon. I put in another 1/2-3/4 can. Numbers look good, its cycling on and off, vent temp is reasonable but not like before. :mad:
  22. Merc1973

    A/C not working after new parts.

    Installed a new Denso AC condenser since it was visibly leaking, new NAPA orifice tube and line, new 4-seasons accumulator, new rubber seals soaked in PAG46 and replaced appropriate PAG46 oil in each part today. Sucked down to 30 psi for 45 minutes, held. Put in 3.5 cans of r134a idling at 1500...
  23. Merc1973

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

    Installed a new AC condenser since it was visibly leaking, new orifice tube and line, new accumulator today. Sucked down to 30 psi for 45 minutes, held. Put in 3.5 cans of r134a, compressor was sucking it in nicely. But the low side numbers stayed at 45-55, high side was 180-200. Then all of...
  24. Merc1973

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

    Im doing the pitman arm, idler arm /bracket tonight. What grease do I want? Red Tacky or Black/grey with Moly? I just bought some Sta-Lube® Moly Graph Lithium Grease from China Freight...
  25. Merc1973

    Rust Repair Cost?

    I have to fix this rust, it looks awful... Not sure if its from the rear HVAC evaporator or just winter salt. About how much do you think it would cost to grind it out, weld in a patch and repaint this lower part of the rear quarter panel? Surprisingly this is the only rust on the body. The...

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