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  1. Merc1973

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

    Dupe
  2. Merc1973

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

    Replaced my intake gasket (Felpro), Knock sensors (ACDelco)/Harness (Dorman) this weekend. Idles smooth as glass.
  3. Merc1973

    Replcing intake gasket with questions

    Update after drive to work and around town: I still have that strange whistle noise at 2300+ RPM... I guess it was not the gasket making that noise. Runs great no CEL.
  4. Merc1973

    The dreaded flashing Check Engine Light

    Mine did the flashing CEL thing when it sucked up a bunch of steam through my bad intake gaskets in the car wash. Rough as hell idle couldn't d get it above 2500 rpm, cleared up when the doors opened to the car wash and i drove it out in the dry air. Hope it helps. Just changed my intake...
  5. Merc1973

    Replcing intake gasket with questions

    Got her done. Watched a bunch of videos. Left the fuel rail on and did not disconnect the cooland lines for the TB. Nice idle now, smooth as glass. Did not have time for t-stat or coolant change, next weekend. A lot of oil inside the intake. My Harbor Freight 3/8" torque wrench does not know...
  6. Merc1973

    Powerstop rotor

    How do you like them? Frnt and rear? Buzzing with heavy braking?
  7. Merc1973

    Stock Supension with 285's - Pics Inside

    Old thread, but will those fit in the spare locatin? What is the largest to fit in there?
  8. Merc1973

    Powerstop rotor

    Had Powerstop set on my wife's Torrent. They were ok until a seized caliper killed one. The humming/buzzing with braking gets very annoying. I now prefer blank rotors. In our trucks it might not buzz as much since these trucks are NOT unibody and will not transmit as much NVH. You cant beat...
  9. Merc1973

    Replcing intake gasket with questions

    (I can't change my title spelling error) I'm finally able to replace my bad intake gasket giving me a whistle sound, rough idle at times and Bank 1&2 running lean codes. I have the new: -Fel-pro gasket set MS9016T -AC Delco 15-11057 T-stat and water inlet assembly -Dorman knock sensor harness...
  10. Merc1973

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

    Yes, it is street legal. I have 3 year Antique plates, no DOT or weight restrictions, and insurance is $142 a year. :happy160: I heard about that "Texas-Ice"... Be Careful, stay safe!!!
  11. Merc1973

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

    Yeah, youre right. A flush is in order. What type to replace with do you recommend?
  12. Merc1973

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

    Thanks. It dont even know what kind is in it now. Doesnt look green or orange.
  13. Merc1973

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

    Quick question what coolant do we use in our trucks? Im doing my intake gasket soon along with other stuff under and t-stat. I want to replace all the coolant from radiator too.
  14. Merc1973

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

    How hard is it to access the rear HVAC aspirator?
  15. Merc1973

    Harmonica

    Watch the RPMs and post when it happens. Mine does this at 2000-2300 RPM due to a bad intake gasket.
  16. Merc1973

    P0171 and P0174 CODES

    I appreciate your reply, glad we could help eachother out. I now have confidence this should fix it! My garage is full of kitchen cabinets waiting to be installed and a 500 lb Cannon gun safe that needs to be brought in the basement .... so im stuck outside. I would love to have a heater in there.
  17. Merc1973

    P0171 and P0174 CODES

    Thats awesome, good work! Glad to hear. My whistle is year round noise too. Im just waiting for ithe weather to warm up to tackle this job and ordered all the parts I listed from Amazon. The garage is too full of crap this winter. Did you watch a video or is there a write-up? How many...
  18. Merc1973

    P0171 and P0174 CODES

    I too have these problems with these 2 codes just after a long trip from MD to MI and back in the cold blast of winter. I experienced them after I got back and went through the enclosed touchless car wash. There was a lot of vapor/steam in the air since it was 10 degrees out, it began to idle...
  19. Merc1973

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

    They Yukon got us to MI and back to MD safely over the new Years weekend. I love this truck!!!! It Never hesitated or slowly cranked in the -10 degree weather. But now after a steamy car wash it threw some codes P0171, P0174 with slight hesitation at WOT and slight rough idle.
  20. Merc1973

    I seem to have fixed my code: P0171 P0174 issue...I guess

    Figured I would bump this instead of cluttering and starting a new one. I too have these problems with these 2 codes just after a long trip from MD to MI and back in the cold blast of winter. I experienced them after I got back and went through the enclosed touchless car wash. There was a lot...
  21. Merc1973

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

    Yeah. I know. I was hoping it was easy. I have done this numerous times on my old Jeep. I always said I would buy a new cover with a drain plug and never did, LOL.
  22. Merc1973

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

    No, no drain bolt like I have seen on pics and youtube vids....
  23. Merc1973

    Replace rear HVAC ceiling temp sensor/aspirator?

    Have anyone replaced the rear one yet? Mine buzzes and I have No Heat in the rear at all, even on max temp. A/C works fine. I bought two of these sensors, one for front and rear. My front finally stopped buzzing and died totally and have no heat until i put HVAC control on max (in front)...
  24. Merc1973

    Mircophones in roof of Denali making a Humming noise

    So does anybody have a tutorial for removing the REAR ceiling sensor??? That's a lot of headliner to come down unless there is an easier way? Im replacing my front one tonight since I only get heat with temp at max and the buzzing noise stopped, lol. I have no heat in the rear at all.
  25. Merc1973

    Does anyone here know anything about this incredible Yukon?

    I like the squared edges and absence of side steps.

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