93 ZR1.????

[Route 66]

I have a 93 ZR1 It Has 17,000 miles on it. My question is when I hit a bump something in the rear of the car makes a sound like a loose shock or wore out shock. [ A loud thump ] I have checked for anything that might be loose. Found nothing. Put new oem type shocks on it. It is still doing it. Has anyone had that type of problem. If so what was causing it ? Your help would be greatly appreciated...............Thanks Ellis....................

[We Gone]

Rear spring cushions? Lose caliper?

[Route 66]

Rear spring cushions? Lose caliper?

Thanks for your thoughts. The spring rubber looks like it might be a possibility. Do you or might someone know where I can get new rubbers for the rear leaf spring...........Thanks Ellis...........

[We Gone]

http://www.parts123.com/parts123/yb.dll?parta~dyndetail~Z5Z5Z50000050f~Z5Z5Z530699~ P21.95~~~~S42B14X4J097811208414a~Z5Z5Z5~Z5Z5Z50000 050F~~~

[nelson007]

Spare Tire loose.

Nelson007

[Route 66]

We Gone and Nelson007 thank you.. / I will look in to that tomorrow.

[Paul Workman]

Check your spare tire/hanger. Mine was loose and made a sound like that onece!

[Route 66]

Check your spare tire/hanger. Mine was loose and made a sound like that onece!

Thank you..

[Dynomite]

Rear spring cushions? Lose caliper?
Thanks for your thoughts. The spring rubber looks like it might be a possibility. Do you or might someone know where I can get new rubbers for the rear leaf spring...........Thanks Ellis...........

When you get it figured out...let us know what it was :cheers:

[Route 66]

When you get it figured out...let us know what it was :cheers:

I will post it here. It might be a few days I will have to order the spring rubbers. ....Ellis

[WARP TEN]

I agree on checking the spare tire carrier, tire and bag. If you can push the carrier up a bit by hand that is probably it; tighten the bolt. If not, it might be suspension bushings. When I first got my 95 in 2012 (with 20k miles) I had a bump noise when I turned into my inclined driveway. Marc H had it in for servicing, thought the bushings looked dried out and replaced one or more (can't remember how many). After removal he said they did not look too bad after all, but the noise went away so that had to be it. --Bob

[secondchance]

I have a 93 ZR1 It Has 17,000 miles on it. My question is when I hit a bump something in the rear of the car makes a sound like a loose shock or wore out shock. [ A loud thump ] I have checked for anything that might be loose. Found nothing. Put new oem type shocks on it. It is still doing it. Has anyone had that type of problem. If so what was causing it ? Your help would be greatly appreciated...............Thanks Ellis....................

All good suggestions above.
I had a similar situation that drove me nuts even after replacing trailing arm (dog bone) bushings, strut bushings, shock bushings, etc... It turned out to be sway bar bushings - 2 on each side/upper and lower.

[WARP TEN]

All good suggestions above.
I had a similar situation that drove me nuts even after replacing trailing arm (dog bone) bushings, strut bushings, shock bushings, etc... It turned out to be sway bar bushings - 2 on each side/upper and lower.

After sconedchance's post I looked at my receipts and he is right--it was the sway bar bushings that were replaced, and that is what solved the clunking problem. --Bob

[Route 66]

After sconedchance's post I looked at my receipts and he is right--it was the sway bar bushings that were replaced, and that is what solved the clunking problem. --Bob

Do you know if they were sway bar end bushings [has 4] or the two that hold the sway bar to the frame? Thanks........

[5ABI VT]

Do you know if they were sway bar end bushings [has 4] or the two that hold the sway bar to the frame? Thanks........


It would be the end link bushings. I had the same issue with my 93 and a friends 96 is clunking and his are so worn you can see right through them.

[Route 66]

It would be the end link bushings. I had the same issue with my 93 and a friends 96 is clunking and his are so worn you can see right through them.

That is good to hear. Yesterday I ordered the end links only. Mine looked okay but I thought I would replace them anyway. Thank you and the others I appreciate your help.

[TommyL]

It is almost certainly your fuel door. I have had this issue with all 3 of my C4's and currently have it with my 90Z. I put new springs on it and some softer rubber bumpers on it.. problem solved.

[Route 66]

It is almost certainly your fuel door. I have had this issue with all 3 of my C4's and currently have it with my 90Z. I put new springs on it and some softer rubber bumpers on it.. problem solved.

Thanks I appreciate your help. I feel sure I found it today. I pulled the sway bar and found a end bushing bad. [5ABI VT you had it right.] Thank You. Thanks to all of you.......Ellis

[secondchance]

Thanks I appreciate your help. I feel sure I found it today. I pulled the sway bar and found a end bushing bad. [5ABI VT you had it right.] Thank You. Thanks to all of you.......Ellis

I recommend replacing with polyurethane bushing. I replaced these with OEM rubber and stamped steel piece and those lasted for about 3 years before starting to disintegrate.

[WARP TEN]

Do you know if they were sway bar end bushings [has 4] or the two that hold the sway bar to the frame? Thanks........

Sorry I did not get back sooner. I was in BG and just got back; didn't check the forum too often. I think 5ABI VT is right. My notes from Marc say "New GM rear sway bar link bushings were installed". That is all I know. --Bob

[Route 66]

Sorry I did not get back sooner. I was in BG and just got back; didn't check the forum too often. I think 5ABI VT is right. My notes from Marc say "New GM rear sway bar link bushings were installed". That is all I know. --Bob

Thanks. I have ordered new ones from Eckler's. I could not buy from GM. One of the bushings looks to be the problem. I appreciate you help.