[MelbaToast454]

Hi two questions:

#1 The reverse gear (maybe synchros problem?) grinds a lot. its loud too. But sometimes I can get it in just the right spot and its fine. Do I need to replace something or what?

AND

#2 My sister got married last night and they drove off in the ZO6. Someone put white Shoe Polish ALL over the windows and the car is black. It ran down onto the paint also! I went thru a high pressure washer and then used windex and a quick detailer to TRY and remove this stuff. tons of little white specs all over the windows and paint still. Do I use a clay bar and or what do u all recommend?

Thanks

 

[Dr.Bigg]

Yes Reverse synchro is a good place to start. Easy fix for the dealer, 1 week or so with no car. Dr.Bigg

 

[z06_23_45]

To my knowledge there is no reverse syncro, which is the reason alot of people have a hard time getting into reverse.

Correct me if I'm wrong please.

 

[RocketSled]

There is no Synchro for reverse. You're not supposed to put the transmission into reverse unless the car is stopped, and if the car is stopped, you don't need a synchro since both the input and output shafts are not moving.

Grinding in reverse is more likely to be a linkage problem or a clutch that isn't releasing fully.

 

[StapAutoEng]

If I have all this right,you have a 04 Z06 6 speed and it grinds going into reverse.
First all T-56 6 speeds are reverse syncro.You could be driving forward and probably get it into reverse without it grinding.
OK.That said,it could be a clutch slave/master cylinder problem.
Try to put it into 1st gear first then reverse to see if it grinds.
Make sure your floor mat or something isn't limiting the pedal travel.

Good luck!

Craig

 

[dailydriver]

My car grinds once in awhile in reverse. Its probabaly an adjustment issue.

As far as the shoe polish, try calling Meguiar's tech line. They are on the net and very helpful.

good luck.

 

[MelbaToast454]

thanks for the help. I got the shoe polish off

WHat happens is every now and when im backing up in a parking lot, it make sure its all the way in reverse, and it will make a horrible grinding noise. So Do you all recommend taking it in to the dealer (sells Chevy, Porsche, Mercedes) or some random Chevy delaership to fix it?

I hope this isnt tooo expensive! :yeadog:

 

[StapAutoEng]

Does it make the noise after it is in reverse and you are backing up or does it do it as you are shifting into reverse??

 

[Dr.Bigg]

I had that problem with 3-4th gear and it was the synchro. I was not aware there was no revers synchro but after reading the above messages it would make sense that there isn't one. I am no expert but I have learned quite a bit lately. This is a 50,000$ machine, it shouldn't grind in revers. Get it fixed under warranty. Dr.Bigg

 

[JETBLU]

I heard grinding once when i put it in reverse to back out of my garage...then i realized why...i wasn't fully in reverse! Never happened again.

 

[Cobra#3747]

Always put the car in 1st before going to reverse. This stops the shaft from spinning and allows easy engament without wearing on parts.

Have had to do a few rev syncros on vettes. Not to bad of a job, but requires pulling the trans and pulling the back part of the trans off.

After its fixed, just do the 1st gear deal and you wont (shouldnt) have any more trouble with it.