shocks
 

Dealership in Oklahoma City wants to charge $3000.00 to replace shocks on front and rear of my 2012 GS centennial. $1600 for front and $1400 for the rear. I don't mind paying to keep her running at peak performance, but $3000 for shocks. Anybody know a good mechanic in the Oklahoma City Metro area? :crazy:

If you are talking about the Mag Ride shocks, it is highly unlikely you need new shocks.

What proof did they provide to support their claim all the shocks need to be replaced?

There have been many posts here about dealers trying to sell new MRC shocks to unsuspecting owners. They are a high profit item and most people don't know any better.

Tell us more. How many miles on the car? Proof? Pics? :)

20,850 miles. Service advisor stated front shocks are leaking and rear seeping. I took car in for an oil change. Will pick car up tomorrow.

$3,000 is pretty high but not too surprised from a dealer.

IF they need to be replaced you can pick them up for about $1,100 and replace them yourself. BUT my guess is that they may be seeping but do not need to be replaced as Rick stated.

If I can find the bulletin I will post it.

The magnetic ride shocks "seep" a little and then their magnetic nature causes everything metallic to stick to them, IE brake dust.

If they are bad the BCM will actually set codes.

You will definitely know they are bad.

The dealership is more than likely just uneducated here and not necessarily trying to screw you.

#05-03-08-002H: Information on Diagnosis and Replacement of Shock Absorber and Strut Due to Fluid Leak - (Dec 9, 2016)
Subject: Information on Diagnosis and Replacement of Shock Absorber and Strut Due to Fluid Leak

Models: 2017 and Prior GM Passenger Cars and Trucks

Attention: This Bulletin also applies to any of the above models that may be Export from North America vehicles.

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This Bulletin has been revised to add the 2017 Model Year. Please discard Corporate Bulletin Number 05-03-08-002G.


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This bulletin is intended to help identify the severity of shock absorber and strut fluid seepage. Improper diagnosis may lead to components being replaced that are within the manufacturer's specification. Shock absorbers and strut assemblies are fluid-filled components and will normally exhibit some seepage. Seepage is defined as oil film or dust accumulation on the exterior of the shock housing. Shock absorbers and struts are not to be replaced under warranty for seepage. Use the following information to determine if the condition is normal acceptable seepage or a defective component.

Important: Electronically controlled shock absorbers (MR) may have a tendency to attract dust to this oil film. Often this film and dust can be wiped off and will not return until similar mileage is accumulated again.

Inspection Procedure
Note: The shock absorber or strut assembly DOES NOT have to be removed from the vehicle to perform the following inspection procedure.

Use the following descriptions and graphics to determine the serviceability of the component.

https://cimg1.ibsrv.net/gimg/www.cor...4399fb3acd.jpg

Shock Absorbers
Object ID: 2360533Click here for detailed picture of the image.


Do Not Replace shock absorbers displaying condition 1 or 2 levels of seepage.


 1. Oil or fluid residue only on the bottom or top of the shock absorber and not originating from the shaft seal (the upper part of the lower shock tube).
 2. Light film/residue on approximately 1/3 (a) or less of the lower shock tube (A) and originating from the shaft seal.
Replace shock absorbers displaying conditions 3 and 4 levels of leaks.

 3. Oil drip or trail down the lower shock tube and originating from the shaft seal.
 4. An extreme wet film of oil covering more than 1/3 (b) of the lower shock tube and originating from the shaft seal.
Coil-over Shock Absorber
Object ID: 2360536Click here for detailed picture of the image.


Do Not Replace coil-over shock absorbers displaying condition 1 or 2 levels of seepage.


 1. Oil or fluid residue only on the bottom of the lower shock absorber tube or the coil-over shock absorber components and not originating from the shaft seal (located at the top of the coil-over shock tube).
 2. Light film/residue on the shock absorber tube, but not on the spring seat and originating from the shaft seal.
Replace coil-over shock absorbers displaying conditions 3 and 4 levels of leaks.

 3. Oil drip or trail down the lower shock tube and originating from the shaft seal.
 4. An extreme, wet film of oil covering the shock absorber tube and pooling in the spring seat and originating from the shaft seal.
Struts

https://cimg6.ibsrv.net/gimg/www.cor...b7c46e55fd.jpg



Do Not Replace Struts displaying condition 1 or 2 levels of seepage.


 1. Oil or fluid residue only on the bottom of the strut tube or on other strut components and not originating from the shaft seal.
 2. Light film/residue on the strut tube, but not on the spring seat and originating from the shaft seal.
Replace Struts displaying conditions 3 and 4 levels of leaks.

 3. Oil drip or trail down the strut tube and originating from the shaft seal (located at the top of the strut tube).
 4. Extreme wet film of oil covering the strut tube and pooling in the spring seat and originating from the shaft seal.
Correction
Use the information published in SI for diagnosis and repair.

Use the applicable published labor operation.

https://cimg8.ibsrv.net/gimg/www.cor...b3a00d559b.jpg

Driver side front shock

https://cimg9.ibsrv.net/gimg/www.cor...96add0601d.jpg

driver side front shock

:lurk:

Wipe those shocks "clean" and just keep an eye on them. "IF" they are really leaking you will be able to tell in a short time. IMO they look fine but others here have more experience. The MRC shocks on my '08 never gave any problems in 8 years.

My 08 has 140,000 miles.. Not a problem with my MR shocks... Suspension is great... Great car...

Very suspect on the leak locations, since the shocks if leaking, the fluid run marks would be on the inner and back side. Hence gravity will have the leak at the lowest spot on the top flat of the shock valve body (back since the shock is mounted at an angle), and the brake duct throw the front fender cover would be pushing the fluid to the back isntead.


Hence staining looks like someone wiped the shock down with a oil rag to make the shook look like it was leaking isntead.

Good call with the gravity diagnosis Dano. :yesnod:

Agreed. A dealer who tries to cheat you once can never be trusted.

The chances of one mag shock going bad on a 2012 are fairly small. The chances of all four going are extremely small. Back in the day when gas stations had an attendant to pump the gas, clean the windshield, and "check under the hood", a common scam was to squirt a little oil on a shock and then claim to have discovered a dangerous problem. Apparently the scam continues.

My dealer tried the same thing on me. 25K on my 2013. I took it in for a front end alignment and the low beam headlight recall. I get a call your front shocks are bad and we will not align the car until you put new shocks on.

So I asked were they leaking, well not really. So I said how did you determine they are bad. I pushed on the car and it bounced. Really.

I said no! I knew there was no leak I had just pulled all the wheels for a clean and wax and I then clean the suspension parts.

I got out the 4 volumes of the shop manual. I did the test that the GM book says to do. My car did not fail one of those tests.

The young punk mechanic thought he had an stupid old man, it did not work!

I am going to stick up for all those "crooked techs and dealers" for one second.

Most dealerships see less than 5 corvettes a quarter if they are lucky, especially the smaller stores.

Most are not trying to screw you, unfortunately they just don't know.

Be honest with yourself, if you were looking at those shocks while doing an oil change or recall and you saw 2 vettes a year wouldn't you think those shocks looked suspect?

And if they don't say anything and then you take it to where ever you normally take it for everything but the free shit and that guy says hey your shocks are leaking.
Then you come back screaming at the dealer about why didn't you tell me my shocks are leaking.
So the dealer defaults to CYA mode.

It's unfortunate they need to be better educated, but most dealerships aren't trying to screw you.

Obvioulsy there are exceptions to this and a "big Corvette dealership" better know the difference.

ETA:
If you go back to a dealer asking them about the bulletin and they still want to replace them and say no, no they are leaking then I would agree, find a new dealer.

Shocks
 

What was the test that you did. Thanks

Great argument, except it's flawed as many GM vehicles have the Magride suspension. The local dealer tried to pull the same crap on my father's 20k mile Tahoe. Anther dead giveaway is maybe one shock could go bad at 20k miles, but not all four.