Recent content by Alaxgoaly8

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    Bass drum noise at 70mph coasting

    Mechanic put it on a dyno and replicated the noise... Used a stethoscope to try and find it. Couldnt find the noise, but heard something at the tires... Tires were 8 years old. Also one wheel losing air... He's suggesting new rims and tires which I was going to do anyway. He can't find...
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    Bass drum noise at 70mph coasting

    Alright... Had a Trans rebuilt to 4L75 spec with an enhanced torque converter in Dec 2024... 2004 Yukon Denali 6.0 AWD, 185K miles. Not sure if the trans rebuild has anything to do with what's going on... Since then, it shifts smooth and don't have complaints except... On the highway at 70ish...
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    Upgraded wheels and tires from a 2023 z71 on my 2004 tahoe

    any rubbing lock to lock? Looking to do the same on my 04 Denali
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    Engine Revs up and down at 35 to 40 mph

    I tried tow/haul mode and using 3 instead of D... While I didn't see the exact scenario, it was similar. I'm going to try both again to try and recreate the scenarios again. One thing I haven't looked at is the exhaust manifold bolts. If the bolts are loose or missing or broken, would the...
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    Engine Revs up and down at 35 to 40 mph

    thank you for the information. If I keep it in 3rd and it doesn't do the same thing, then you're thinking it's the TCC lockup issue?
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    Engine Revs up and down at 35 to 40 mph

    I'll try both. I'll try driving it in 3 and with tow/haul mode on... question with T/H... do I press the button after it shifts into 4th or right at start up? I'm familiar with T/H from my RV on my Ford V10, but never used it on this truck.
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    Engine Revs up and down at 35 to 40 mph

    I appreciate all the responses... Going to try and answer a few of the questions including the one quoted... 1. I can accelerate out of the problem. It doesn't happen when trying to hold 55 or 65 on the highway for example. 2. Other than a sheet of paper about a warranty on a certified gm...
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    Engine Revs up and down at 35 to 40 mph

    Here's my scenario. 2004 GMC Yukon Denali 6.0 AWD... I bought this back in February with 177k miles and noticed it had some issues (no big deal. Knew that when I bought it). Had a troublesome P0300 but we seemed to have calmed that down to the point where the CEL hasn't come back on and the...
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    Repaint Olympic White

    I've got the same color on my 04 denali and you might want to try doing a buff on it first cause it just might be your clearcoat with the issues. If you can get away with a scuff and layers of clear, you may not have to mess with the color. The other thing is... It's an older truck like mine...
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    Moving 2nd row of seats back

    Nevermind... Just realized it wouldn't work with the rear bolts, but I wonder if you could use that for the front bolts and then maybe drill a hole in the seat frame to line up with the back bolt. I'll have to take a look.
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    Moving 2nd row of seats back

    I know one of the rules in a forum is to not revive a 15 year old thread, but was thinking if a specially made metal rectangle piece that allowed for a hole in one end to slide over the original bolt and a threaded bolt the same as the original size on the other end of the rectangle (could be 1...
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