transmission does have syncros on reverse
[Z06] Z06 transmission syncros problem??
Thread Starter
Melting Slicks
Joined: Aug 1999
Posts: 2,619
Likes: 1
From: Whidbey Island Washington
Z06 transmission syncros problem??
Guy in our Vette club has '02, Z06 and has trouble downshifting into 1st gear...grinds like the syncros are going south. Car has just under 30K miles and HAS NOT been raced. Is there a problem with the syncros in the Z06 tranny...and if yes, what is best "fix"? Thanks in advance for any help you might offer. Bill
Pro
Joined: Aug 2004
Posts: 581
Likes: 0
From: Charlotte North Carolina
2002 z06 transmission problems
My experience. car had 35,000 miles on the odemeter, no racing of any kind, when reverse gear synchros went south. Repaired under warranty.
After driving the car approx 100 miles after the repair noted above, 3rd to 4th gear syncrhros went south.
Dealership did not want to warranty the 3rd to 4th problems, citing possible abuse.
I noticed on the reverse gear repair ticket that the mechanic "fished out" the broken parts. I brought this to the attention of the shop manager and brought up service bullitens associated with the 2002 z06 transmission. I sat in his office for 1 hr waiting for him to find the bulletins related to the 2002 z06 synchro and shift fork problems.
Even after finding the problems noted above, the manager did not want to warranty the transmission. My repsonse was "l'll fax the reverse gear ticket with "fished out" broken parts to GM and see what they have to say. Good tranny guys don't "fish out" broken parts; they tear them down and clean all parts/housing.
I told the manager I wanted a 2004 transmission, latest revision and got it.
Tell your friend, get the 04 transmission under warranty. Don't mess around with a dealership "rebuild"!
After driving the car approx 100 miles after the repair noted above, 3rd to 4th gear syncrhros went south.
Dealership did not want to warranty the 3rd to 4th problems, citing possible abuse.
I noticed on the reverse gear repair ticket that the mechanic "fished out" the broken parts. I brought this to the attention of the shop manager and brought up service bullitens associated with the 2002 z06 transmission. I sat in his office for 1 hr waiting for him to find the bulletins related to the 2002 z06 synchro and shift fork problems.
Even after finding the problems noted above, the manager did not want to warranty the transmission. My repsonse was "l'll fax the reverse gear ticket with "fished out" broken parts to GM and see what they have to say. Good tranny guys don't "fish out" broken parts; they tear them down and clean all parts/housing.
I told the manager I wanted a 2004 transmission, latest revision and got it.
Tell your friend, get the 04 transmission under warranty. Don't mess around with a dealership "rebuild"!
Team Owner
Joined: Oct 2001
Posts: 56,381
Likes: 79
Originally Posted by game on
My experience. car had 35,000 miles on the odemeter, no racing of any kind, when reverse gear synchros went south. Repaired under warranty.
After driving the car approx 100 miles after the repair noted above, 3rd to 4th gear syncrhros went south.
Dealership did not want to warranty the 3rd to 4th problems, citing possible abuse.
I noticed on the reverse gear repair ticket that the mechanic "fished out" the broken parts. I brought this to the attention of the shop manager and brought up service bullitens associated with the 2002 z06 transmission. I sat in his office for 1 hr waiting for him to find the bulletins related to the 2002 z06 synchro and shift fork problems.
Even after finding the problems noted above, the manager did not want to warranty the transmission. My repsonse was "l'll fax the reverse gear ticket with "fished out" broken parts to GM and see what they have to say. Good tranny guys don't "fish out" broken parts; they tear them down and clean all parts/housing.
I told the manager I wanted a 2004 transmission, latest revision and got it.
Tell your friend, get the 04 transmission under warranty. Don't mess around with a dealership "rebuild"!
After driving the car approx 100 miles after the repair noted above, 3rd to 4th gear syncrhros went south.
Dealership did not want to warranty the 3rd to 4th problems, citing possible abuse.
I noticed on the reverse gear repair ticket that the mechanic "fished out" the broken parts. I brought this to the attention of the shop manager and brought up service bullitens associated with the 2002 z06 transmission. I sat in his office for 1 hr waiting for him to find the bulletins related to the 2002 z06 synchro and shift fork problems.
Even after finding the problems noted above, the manager did not want to warranty the transmission. My repsonse was "l'll fax the reverse gear ticket with "fished out" broken parts to GM and see what they have to say. Good tranny guys don't "fish out" broken parts; they tear them down and clean all parts/housing.
I told the manager I wanted a 2004 transmission, latest revision and got it.
Tell your friend, get the 04 transmission under warranty. Don't mess around with a dealership "rebuild"!
Instructor
Joined: Jul 2005
Posts: 167
Likes: 0
From: Hamilton Ontario
My reverse shift fork and syncro was replaced under warranty last year.My car only had 2000miles at the time.The new shift fork was made of steel and I believe the original was made of a lighter metal(?aluminum).It was repaired on the car as well.GM would not pay for a larger rebuild.My reverse does not pop out of gear anymore,however it is realiy a lot more difficult to engage the shifter into reverse
Drifting
Joined: Jun 2005
Posts: 1,824
Likes: 1
From: Middleboro Massachusetts
Originally Posted by ZRWON
Guy in our Vette club has '02, Z06 and has trouble downshifting into 1st gear...grinds like the syncros are going south. Car has just under 30K miles and HAS NOT been raced. Is there a problem with the syncros in the Z06 tranny...and if yes, what is best "fix"? Thanks in advance for any help you might offer. Bill
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Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
My 01 had just over 20k miles when mine started grinding. It ended up being the blocker rings that hold the synchros. I had the trans rebuilt with new blocker rings and a steel shift fork. It is going strong for now.
