Recent content by RiverGuy

Thanks (again). The problem is so trivial and very much intermittent, and I have other vehicles at my disposal, so there's no way l'd tear it out and tear it down with only 100k miles and no other concerns whatsoever. Maybe if I win the lottery and decide to fix the leaking right-front axle...

Thanks. No, I've owned it since 52k and the noise only started at about 95k. Never rebuilt, and otherwise it's been solid as a rock.

I had a soft shift (2-3 if I recall correctly) in my 2003 Bravada at about 130k and it cleaned up completely by swapping in the 'Corvette Servo' that was recommended somewhere. I absolutely loved the feel and drove it for about 10,000 miles that way. Only sold it when I found my current Final...

Wow, after having owned three of these, one might think I'd have heard of an anti-rattle spring! Thanks for the tip! I'm wondering if it's referred to by a different name in the GM service manuals or on alldatadiy? Is there an easy way to check it? Again, it never rattles when I upshift...

Makes perfect sense, thanks!

So...after having nearly identical problems to yours in the last 5 years with three low-mileage oldsters (2008 Pontiac G6 GT, 2003 Olds Aurora and my 2004 Olds Bravada) -- in all three cases it was changing the PLUG WIRES that finally fixed it! In all three cases, the original plug wires became...

At 99,000 miles, recently I started doing more frequent towing, including some extremely hot days >100 degrees here in Minnesota. Trailer weights under 3,000 lbs, but in some hilly areas. My check engine light has been coming on intermittently for several thousand miles complaining about a...

Ok, thanks. It's definitely not drive-line torque related, as I said the noise never happens when I shift manually. In fact, it seems it happens more when I am going 'light-footed'. Detent (kick-down) downshifts are normal, heavy throttle applications and accompanying high-rpm shift points do...

Thanks for that (I used to know these things :-). -= One reason I'm drawn to a problem in the torque converter is that the rattle sound is loud, clear and roughly consistent with what one might expect whan sharp vibrations are transmitted to the flex plate/flywheel. -= Also learning now that...

Likewise, I'm a lightfoot. I'd be gussing to say the rattling occurs just before shifts happening in the 2300-3000 rpm range.

...and thanks also for your post here: https://gmtnation.com/forums/threads/4l60e-tcc-questions.23700/ Right now I'm thinking the TCC is the root cause, I understand manually shifting disables TCC lockup, so that might explain why the rattle goes away when I upshift manually.

Thanks Mooseman! Yes, everything's been checked out underneath. All fluids checked/replaced at about 90,000 miles when the flush was done. Tranny fluid was perfect -- no metal particles and surprisingly little sludge on the pan magnet compared to the other two Bravadas I owned before this one...

Thanks! I know it is coming from the transmission because (see my third bullet above). That, and I am not stupid or deaf in either ear -- so with two good ears I can localize sounds somewhat reliably and by combining spatial and temporal senses and reasoning, I'm able to hear and think at the...

Occasionally, the transmission in my 2004 Olds Bravada makes a 'rattle' sound for 1/2 to 2 seconds just before upshifting from 2-3 (and maybe also from 1-2). I hear the rattling begin as the RPMs increase just before the shift is commanded and the rattle ends instantly when the shift completes...

Wow...thanks! I have a mechanic I have worked with for 20 years, I'm going to have him take a look at this procedure and see if they will do it. SO HELPFUL!!!