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GM changed the clutch pedal spring assist from the C5 to the C6 (to more tension).
I've owned two C6s & both had issues with clutch pedal not coming back up. I know the spring has a dual purpose.
The change did nothing. A few years ago I replaced the clutch master cylinder to a tick & have had zero issues with the clutch pedal.
The newer spring did nothing, so why the change by GM?
Please enllighten me, thanks.
I'm beginning to believe the engineers had no clue for changing the spring assist.
Engineers love to change things for no reason. And many people actually remove the C6 spring and put in a C5 spring for a better pedal feel.
As for the clutch going to the floor, that was a common problem on C5 and C6's and GM did put out a revised master cylinder that seems to have fixed the problem for most people. A Tick MC is also a good solution.
GM changed the clutch pedal spring assist from the C5 to the C6 (to more tension).
I've owned two C6s & both had issues with clutch pedal not coming back up. I know the spring has a dual purpose.
The change did nothing. A few years ago I replaced the clutch master cylinder to a tick & have had zero issues with the clutch pedal.
The newer spring did nothing, so why the change by GM?
Please enllighten me, thanks.
The clutch pedal not coming back up has nothing to do with the spring (other than the fact that it pulls on the clutch pedal). What you experienced is a hydraulic issue that could effect all manual C6s. I had problems with both my 2008 Z06 and my 2010 ZR1. I put a Tick adjustable in the Z06 because the GM updated master cylinder didn't exist yet, but I put the updated GM one in the ZR1 in 2020 when it started doing the same thing. I also put the updated GM one in my Grand Sport the second week of ownership just as a preventative measure knowing that it wasn't a matter of "if" I would have problems, but "when".
the spring had only one purpose and that was clutch "feel" the C5 spring had better feel IMHO. the spring has NOTHING to do with returning the clutch pedal, so you should educate yourselves before degrading someone else's intelligence .
The clutch pedal sticking to the floor, is the end plunger coming off the master cylinder rod, and no back pressure to push the pedal back up to over come the bottom of assist spring. You can pull the pedal up to over come the assist spring assist on the bottom of pedal stroke, but still going to have a dead master cylinder.
As for the C6 assist spring, GM increased the assist tension on the bottom of stroke to help the now aging buyers to decrease the amount of leg strength to hold the pedal to the floor during a stop light. Hence dead give away that GM target buyers was the aging crowd, is the seats that are dam near e-z boy recliners as well.
Also, on the stock clutch due to its spinning weight, if the fluid in the system is dirty (ranger method to change the clutch fluid to keep is clean), the inertia force of the clutch delays it engagement returning to lock up (over come the assists spring on bottom of stroke). And yes, GM knows about this, and its one of their designs to save the drive line from high rpm shock that was under warrenty, so the clutch that was never under warrenty, takes the abuse of such quick high rpm shifts isntead.
The clutch pedal not coming back up has nothing to do with the spring (other than the fact that it pulls on the clutch pedal). What you experienced is a hydraulic issue that could effect all manual C6s. I had problems with both my 2008 Z06 and my 2010 ZR1. I put a Tick adjustable in the Z06 because the GM updated master cylinder didn't exist yet, but I put the updated GM one in the ZR1 in 2020 when it started doing the same thing. I also put the updated GM one in my Grand Sport the second week of ownership just as a preventative measure knowing that it wasn't a matter of "if" I would have problems, but "when".
Here's what it looks like (black reservoir, DOT 4 on the cap) from my 2011 Grand Sport:
I agree with you 100%. The spring assist has nothing to do with the pedal sticking to the floor.
I went through the exact same thing with my Z06 & ZR1.
When I changed out my clutch master cylinder, GM didn't even have the upgrade yet.
The clutch pedal sticking to the floor, is the end plunger coming off the master cylinder rod, and no back pressure to push the pedal back up to over come the bottom of assist spring. You can pull the pedal up to over come the assist spring assist on the bottom of pedal stroke, but still going to have a dead master cylinder.
As for the C6 assist spring, GM increased the assist tension on the bottom of stroke to help the now aging buyers to decrease the amount of leg strength to hold the pedal to the floor during a stop light. Hence dead give away that GM target buyers was the aging crowd, is the seats that are dam near e-z boy recliners as well.
the spring had only one purpose and that was clutch "feel" the C5 spring had better feel IMHO. the spring has NOTHING to do with returning the clutch pedal, so you should educate yourselves before degrading someone else's intelligence .
No need to be so hostile.
I know the spring has NOTHING to do with the returning of the clutch pedal.
The only thing I was questioning is why more tension on the C6 assist spring vs the C5 spring. End of story.
I guess I shouldn't have mentioned anything about the clutch master cylinder in my original post.
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Clutch pedal spring assist
