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  1. mhaywoodcz

    2002 Yukon Denali making noise when decelerating

    Pads or possible U joint, front and rear always turn so I would check them also
  2. mhaywoodcz

    2002 denali front diff failure/vibration

    Update, the other shop rebalanced the drive shafts, they ended up removing weights and adding some others. Seems the first shop didn't do a good job. Either way it's a whole lot better. When I did the big brake upgrade (2023 pads/rotors) I got a newer set of wheels. The tires are new but are...
  3. mhaywoodcz

    2002 denali front diff failure/vibration

    Update, I checked all the mounting points and everything is good. Replaced the front diff, driving wise its smoother but I still have the vibration. Ive pulled the front and rear drive shafts, going to take them to a different shop tomorrow (drive line specific). I believe the last place I had...
  4. mhaywoodcz

    2002 denali front diff failure/vibration

    thanks for all the replies guys, the fluid is definitely glittery, so I ordered a reman diff from powertrain products. With 170k on the original, it's possible it's at its end. I know when I first got the Yukon it had 150k on it, diff fluid was brown glittery, so I figure it hadn't ever been...
  5. mhaywoodcz

    2002 denali front diff failure/vibration

    Forgot to add, the vibration is while rolling, neutral, or in any gear at the higher speed. It kinda drones also, kinda humm, humm, humm. Hope this helps someone decipher this and anyone else in the future
  6. mhaywoodcz

    2002 denali front diff failure/vibration

    GM Gurus, I have recently been working to solve a vibration in my 2002 Yukon Denali. Heads up this has been a fun 1. SO, 6 months or so ago I replaced the transmission with a reman from Performabuilt with a FTP torque convertor 2000stall. (just adding this to the history, you will see why soon.)...
  7. mhaywoodcz

    2005 Denali XL AWD - How does AWD work?

    Mine is a 2002 Denali with the G80. It's AWD but has the NP149 transfer case vs the newer Bosch. Don't know it has the works the same with the silicone coupler vs discs like the Bosch as far as power delivery
  8. mhaywoodcz

    2002 fuel trims loss of power after 2 hours

    Today I completed the E-fan upgrade Got the harness from ScottyBoy. Works great! went down the road and watched fuel trims, they seem to be around 0 or -1. So Im assuming that my fueling issue may be good now. Going to drive it around for a while and see. Thanks everyone for the input
  9. mhaywoodcz

    2002 fuel trims loss of power after 2 hours

    Thanks for the suggestions guys, I replace the pump yesterday. Found that who ever did the wiring last time only twisted the wires together and heat shrinker them, no solder or crimps or anything. Anyways I redid the connections with crimps and heat shrink and put it all back together. The new...
  10. mhaywoodcz

    2002 fuel trims loss of power after 2 hours

    So I sent the logs and pics to Black Bear, they believe it could be a failing fuel pump. Seems to only act up when it's hot/ few hours driving. So this weekend its fuel pump and vac line check time. Ill keep everyone posted on it
  11. mhaywoodcz

    2002 fuel trims loss of power after 2 hours

    Interesting, just weird that there are no DTCs showing up. I'll dig in and see how the vac lines and check the intake manifold, it does look a little oily on the passenger side. Thanks
  12. mhaywoodcz

    2002 fuel trims loss of power after 2 hours

    Hey Guys, Need a lil troubleshooting help. I have a stock 2002 Yukon Denali with 170k miles that starts acting stupid only during long road trips. We use this primarily for pulling the boat or camper to the beach our mountains. Usually after a good 2 hours of driving, I get issues with power...
  13. mhaywoodcz

    2002 Tahoe front end whine

    Hey Guys, not trying to thread hijack but I have a 2002 Denali, similar whine from the front end. Suspect the front diff, it had wonderful glitterness in the fluid when I changed it (new to me). If I read this correctly, can I find a 4x4 with the same gear ratio front diff and add my AWD portion...
  14. mhaywoodcz

    Make the Tahoe New Again

    I would have to agree with all the other guys, alignment and OEM parts. When I got my Yukon, the first thing I did is the entire front end, tie rods, control arms +ball joints, intermediate steering shaft, the works. After all the new parts then the alignment. As far as bumpity bumps,I had an...
  15. mhaywoodcz

    Did '01 and '02 Yukon Denalis come standard with G80?

    Mine has G80 its an 2002
  16. mhaywoodcz

    Gas tank swap?

    Thanks for the info and old thread to reference, since I want to keep my spare, I will just keep stopping every 200 miles. I guess its goes along with my New Years goal to "slow down and enjoy the little things"
  17. mhaywoodcz

    Gas tank swap?

    Thanks for the info, It was worth a shot, just dont enjoy stopping every 200 miles or so.
  18. mhaywoodcz

    Gas tank swap?

    Hey Guys, I have a question regarding gas tanks, searched but didn't really find what I was looking for. I have a 2002 Yukon Denali 6.0 152k miles that is mainly used for pulling a boat or camper. It does great pulling either, but all in all I have to stop alot for gas. (yeah, first world...
  19. mhaywoodcz

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

    Been there done that, its a pain. Maybe the copper is better. I experienced the same frustration, kept working it until finally It seated without the drip.
  20. mhaywoodcz

    Equalizer hitch setup with Autoleveling

    Thanks for the info, Ill give it a try
  21. mhaywoodcz

    Equalizer hitch setup with Autoleveling

    Hey Guys, I have read a few posts on this most were for newer models but would like conformation. 2002 Yukon Denali with auto leveling, I am purchasing a travel trailer this week and have a WD hitch but haven't set up everything yet. The way I understand it is Back Yukon to trailer Turn off...
  22. mhaywoodcz

    Rear Differential? Help please

    Sounds like to me the universal joints in the main drive shaft are failing. Needle bearings are worn out, Clunk and squealing are symptoms I had on a previous vehicle. Have them checked or replace them...
  23. mhaywoodcz

    I Know, I Know... Not another P0300 Question

    I worked on a friend's Tahoe from West Virginia a few times. His dad drove it to the coal mine everyday and never washed it. It looked very similar to this underneath. Ran like a champ but was hell to work on. Holy frame and all. Every time I had it in my shop the floor looked like the inside of...
  24. mhaywoodcz

    2003 Denali while hard acceleration driver side tire pulling hard

    Hey Stevie, what happens when you drive it normally? no punching it. Does it act the same way 1 side pulling, also does 1 wheel feel hotter after a 20min ride than the other? Wondering if you have a caliper sticking causing it to pull...
  25. mhaywoodcz

    New guy from NC

    I’ve been soaking up the knowledge on the forum, replaced all the front end components, air ride compressor+shocks, all new fluids throughout, and Saturday night just did stainless hard lines and braided lines. Thanks everyone for sharing tips and tricks. I hope to add to the knowledge base.

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