Chevy Astro and GMC Safari Forum banner

Help Needed ID'ing This Sound

799 Views 17 Replies 9 Participants Last post by  Epartsman
Hello all.

Thank you for taking time to read.

So my 2000 Astro AWD started making this noise upon cold start. After a few minutes it will get a bit better. Everything seems to be in order but obviously something is off. Most recent work done was to replace the alternator and the battery. I can't seem to find a connection between the repair and the noise.

Note that I have been getting P0420 DTCs and had not yet gotten a chance to investigate since this appeared.

I've done a little reading and I'm not sure if this could be the worn distributor, or, something much worse. I believe that the disty is original and I'm approaching 300k miles. I'm hoping you'll recognize this noise which will help me find it and fix it. Budget is very tight and we're already down one vehicle.

1 - 1 of 18 Posts
Epartsman...I think that is great news ( finding suspicious stuff in the flexplate area) .
The bolts that hold the flex plate to the torque converter may still be screwed into the torque converter, holding pieces of the broken flex plate to the torque converter. If that is the case, new bolts, a new flex plate and possible even a new torque converter may be needed ( much better news than a broken motor !) .
Pictures will be expected!
I would definitely like to see what damage has been done to the various pieces. I have never seen the results of a similar thing, but have seen what happens when a clutch disc and pressure plate decide to slowly disintegrate. It is not pretty. :coffee:

Mmusicman and others have some excellent experience and good information on pulling trannys, specifically with respect to heights needed. I recommend renting/borrowing a transmission jack if possible. Being able to control the tilt angle of the tranny while on a jack is a huge help, but it might mean a bit of extra height for clearance.

Rod J
Issaquah, WA
See less See more
1 - 1 of 18 Posts