Hi all, need a favor to ask till i get my repair manual...i think my new 2000 pewter C5 was lowered by the previous owner..can someone with a manual look in section 3 "general specifications" and tell me the gap dimensions on the front spring adjustor bolt....

thanks all

jack

 

Jack,
I don't think there are any specs for the adjuster bolt. It is adjusted to set the ride/trim height specs.
Dave

 

I believe this is true and the Trim Height Specifications are different for each of the C5 suspensions - FE1, FE3 and FE4. The Trim Height Specifications and Tolerances are for the distance measured between the lowest point of the ball joint and the center of the front side of the lower control arm mounting bolt using a special trim height gage tool. Also, the procedure to properly set the vehicle ride height/trim is quite detailed.

 

ahhh...ok guys thanks

edit: do you guys have the repair manual and there's nothing in the spring adjuster bolt gap allowed in the section 3 "General Specifications" tables for front and rear suspensions. ?

 

Yes, I have a 2003 GM Service Manual. Section 3 is titled "Suspension", and both the Trim Height Inspection/Adjustment procedure (beginning on page 3-15) and Front Traverse Spring Replacement procedure (beginning on page 3-34) reference the Trim Height Specifications to insure proper vehicle ride height. I don't have access to a 2000 GM Service Manual so I suppose the procedures/specifications there in possibly could read different than in mine.

 

Jack,
Serious question here.
Why do you want to know this information?
Most of us just adjust the height where we are happy with it.
Someone here can tell you the factory heights measured at the fenders. That will get you close.
Dave

 

it just seems very low and was just wondering if it was lowered at all. it is scraping my driveway entrance and the 94 never did that..i guess the C5;s are lower than the C4's .....just curious thats all..

thanks
jack

 

Jack,

I was over at a friend's place earlier tonight helping him on his '99 C5 vert and in so doing was going through his '99 GM Service Manual. I was somewhat surprised at the difference in the earlier '99 manual and my '03 manual. The procedures for the most part are much the same but the layout of the two manuals is quite different. Section 3, "Suspension" in the '99 manual does have the "General Specifications" list which you referenced in your original post where in my '03 manual the specs are listed through out the section, usually with the procedure that uses them. And, I stand corrected. The "General Specifications" list in the '99 manual does contain the Front Spring Adjuster Bolt Gap Specification that you requested. However, I'm not so sure that you can use these specifications as you are trying to use them to determine if your car has been lowered. These specifications are more toward a range or tolerance. Anyway here are the specifications as such:

Front Spring Adjuster Bolt Gap Specifications (from '99 GM Service Manual):

Minimum/Maximum Gap: 2mm to 24 mm or 0.078 to 0.944 in.

Maximum Difference Allowed Between Right and Left Bolt Gaps: 5 mm or 0.196 in.

As I mentioned in one of my earlier posts, the Trim Height Inspection/Adjustment Procedure in the manuals is quite detailed. The last step in adjustment of the front trim height is to measure both Front Spring Adjuster Bolt Gaps and adjust to the specifications as necessary. Once you get a hold of a shop manual for your year car, I think you will readily see what this is all saying.

Hope this helps and my apology for any confusion I may have caused!

 

Jack,
Interesting post by Gray.
The front bolt adjuster gap range sounds like the difference from all the way turned down to all the way turned up. That range was almost 1".
I don't think that info will help your specific question.
The important thing is the allowable difference side to side.
If you post your exact height measurements at each corner from ground to fender I will tell you if the car has been lowered.
Yes, the C5's scrape the front spoiler easier than the C4's.
Dave

 

Jack,

Don't know why I didn't think of this before. If your car was lowered on the stock bolts, I would think you should be able to look at the ends of the bolts to tell. Check out Patches' reply with pics to the following thread. I think Patches may have more pics (front and rear) and probably would be more than willing to share them with you if you PM him. Here's the link: Lowering Questions

Good luck!

 

thank's guys

jack