LS1AB

I just noticed my car has a lean to it! It’s a 2011 GS with MRC. I took a look underneath (no access to a jack or lift) I saw nothing out of the ordinary, shocks are not leaking. It is out 3/4 inch in the back and 1 inch in the front. The whole thing is leaning on the driver side. Any idea what would cause this or what to check? It measures 28” back and 25 1/2” front on the driver side.

ProCycle

Could be a worn or broken spring. Also the rubber feet on the ride height adjusting bolts can fail.
Or maybe one of those adjusting bolts has backed itself out.

torquetube

The bushings on your ride height adjuster bolts are probably shot. They disintegrate over time, causing your suspension to sink, and not always evenly.

GM has never sold the bolts separately from the springs. The spring assemblies are very expensive. Several vendors sell "lowering bolts" which don't have thick bushings, i.e. what you already have now, more or less. The only factory-style reproductions I know of are sold by Corvette Central. I have those on my car.

https://www.corvettecentral.com/c6-0...d-97-19-575020

LS1AB

Thanks guys, sounds like that could be the problem. I have a friend with access to a lift. How involved is it to replace them? Are front and rear the same part?

LS1AB

Thanks guys, sounds like that could be the problem. I have a friend with access to a lift. How involved is it to replace them? Are front and rear the same part?

torquetube

The OEM bolts are smaller in front, but Corvette Central sells reproductions of the rear bolts for use on all four corners. They seem to work fine.

Replacement isn't rocket science, but it can be time-consuming. You need to unload the bolts, which means lifting on the spring with a separate jack and a block of wood. After installation your ride height will likely be way off. Drive downtown and back so everything settles and re-adjust the bolts. Then do it again and you should be about there.

Afterwards wouldn't be a bad time for an alignment.

Sometimes the old bolts are stuck and you have to soak them in penetrating oil for a day.

I'd start by confirming that your bolts are shot. Inspect the corner that's sunk the most.

1Willy1

mine doesn't lean but I can tell you forsure the MRC changes its ride height at times

If it hasn't been going on for a long time maybe switch to sport , and track mode a few times during the day, and see if it settles

LS1AB

Thanks *****, I’ll try that tomorrow. That’s a lot easier than replacing parts!

LS1AB

I tried driving around a lot and switching between sport and touring mode, no luck. I bought a jack and some stands to take a look at the lowering bolts. Haven’t got under the car yet, just wondering which bolts to replace them with. I looked at Corvette Central and theirs are same as stock. I see those actually wear crooked since they don’t sit flat. Anyone used Eibach brand?