cyclesailor955

Our 2011 Grand Sport left front Magnetic Selective ride shock is leaking oil and all 4 shock bodies have gritty film on the shock bodies. I suspect metal particles.
In other words I need a set of Magnetic Selective ride shocks.
Any suggestions on where to purchase replacements?? I am able to replace the shocks myself.
Does the ECM or any other brain need to be reprogrammed??

Thanks

cgladish

i just replaced my front shocks ( 2009 with mag ride option ). got them from summit, about $430 each. i still have other issues to address though ( either a wheel speed or steering wheel position sensor to deal with first ).
the shocks did help though. when i get the sensor issue resolved, hope to have my nice firm ride back.

HYRYSC

Do some digging and you will see that it might just normal leakage. I saw the same thing on mine, read a few threads and seems that what I am seeing is normal.

Hitman227

I'm not sure if you can get them from Rock Auto, instead of Dealership, or not. In addition, can try searching Google...

I believe have to reprogram, if replacing with regular shocks.

dr_gallup

Sounds like you have at most 1 bad shock.

cyclesailor955

And the other 3 shocks with a gritty metallic coating.

Landru

MR shocks 'sweat', this in-turn accumulates dust/grit.
Years back MR shocks were REALLY expensive, at least twice what they are now.
Members developed a little test to decipher whether shock was just sweating or leaking.
Clean each shock well, wipe sparkly clean. Wait a few days. Inspect.
If relatively clean shock's OK, if shock(s) oily they're shot.
Easy cheap way to prevent spending $ on pricey shocks when it may not be needed.

Dealers were replacing these things if/when customer made same complaint as you.
Got mighty expensive, remember these damned shocks were 2x now if not more.
GM stopped just replacing. Fast.
Seems I also recall dealers started requiring a similar procedure members came up with.

buckmeister2

The guys are trying to send you in the right direction. An oily film with gritty particles is perfectly normal for F55 shocks.

This was discussed at great length just two days ago, and doing a search would give you all the answers you need.

VINAL13

This thread has great info on F55 shocks and their alternatives:
https://www.corvetteforum.com/forums...placement.html

owc6

Weeping and leaking are two different things.

I wouldn't worry about weeping (just keep an eye on it), but actual leaking (dripping) is something to deal with.

449er

A "weeping" shock is normal, a "leaking" shock needs to be replaced

Mike Green9

As said many times in this post, a light oil film on F55 shocks is normal. I had to change one shock (Rear LHS at 12,000 miles) ) as I was getting serious drips on the wheel barrel. Back in 2012 I paid $450 for a replacement that took me less than 30 minutes to replace

I would never give up these amazing shocks. The rate of compression/expansion tightens up (damping) much faster in Sport mode, and would only be noticed on a road with a lot of dips. Also, no lean on the twisties.

There is a nasty dip on a nearby highway that caused my front air dam to hit the pavement. Every time I would approach this dip I would slow down to 40mph so I would not smack the air dam. You can imagine how cars behind me liked that. Then one day I got smart and turned the dial to Sport as I approached, and found that I would not hit even at 75mph. Space age stuff. Thank you GM.

M....

joliett

I could use some help with how to determine when the shocks are bad. I have some seepage on the tube but nothing dripping, but all was well otherwise. But when my trusted mechanic said to replace them because of the seepage, I was wondering....I knew the shocks were old, but still performing well. 170K miles....

The other day though, I hit a bad dip at an entrance to a country road bridge and it sounded bad. I looked at the rear tires and everything looked ok. Then about a week later, I noticed luckily, a huge tear in the sidewall right along the wheel. The wheel was perfect. The tear was about the size of a fist. The tire still had air, but the threads were completely ripped through. The tires were only one week old. New Michelin's zero pressure.

Do you think the tire blew out because my shocks were weak? Would a weak shock cause damage to a tire?
How can you tell when to actually replace the magnetic shocks? It seems like a guessing game.

buckmeister2

No, the bump caused the tire to fail. A tire and wheel take the full effect of a bump milliseconds before the shocks react.The shocks help deaden the effect of the bump after the tire and wheel hit it. The bump caused the tire to fail, not the shocks.

HYRYSC

I agree with Buckmeister2.

To tell if it is failing should be like every other shock I would assume. If it is bad, then the shock will stop working. Mine has the warning in the DIC when it detected an issue.

HOXXOH

The DIC warning can happen anytime an electric connection is broken, but the shocks are still good.

HYRYSC

Correct, which is what happened to me, but it still showed an error. If the shocks go bad then it will throw up a code as well.

phileaglesfan

I just got back from the dealer. I had noise coming from left front when turning slow. He said they are replacing the wheel bearing but my magnetic shock on same side was blown. I looked at it and the control arm was covered with gritty black fluid. Other 3 were dry. It still ran great. They said it looks like it has been leaking for a while. I havent driven my 13 GS much due to moving from UT to MD and of course COVID.

I have GMEPP but the bill would have been $2k including loaner vehicle. I wouldn't go without these shocks. They are fantastic and just dont wear out slowly. But they can fail. My GS has 68k miles.

h8snow

Front shock is around $400 was the extra $1600 bearing and labor?

phileaglesfan

GM parts prices. $800 for the shock, $400 for bearing, $570 of labor for both. Warranty took care of it so I dont care what they charge.