[Z06] Downshifting 6 to 5 Problem
Drifting
Joined: Jun 2005
Posts: 1,824
Likes: 1
From: Middleboro Massachusetts
Originally Posted by bb609
I feel like I'm hitting the gear as it wants to go forward but then you feel steady and increasing resistance until it won't go any more. If it is a synchro, wouldn't it:
1. grind?
2. have the same problem going 4 to 5?
That's why I'm thinking something else like a fork or something internal. Still can't discount the driver either but until they can show me that it shifts normally or how to, it's stays at the dealer until it's fixed. Keep ya posted!
1. grind?
2. have the same problem going 4 to 5?
That's why I'm thinking something else like a fork or something internal. Still can't discount the driver either but until they can show me that it shifts normally or how to, it's stays at the dealer until it's fixed. Keep ya posted!
Burning Brakes
Joined: Jun 2004
Posts: 884
Likes: 1
From: McKinney TX
Originally Posted by bb609
I feel like I'm hitting the gear as it wants to go forward but then you feel steady and increasing resistance until it won't go any more. If it is a synchro, wouldn't it:
1. grind?
2. have the same problem going 4 to 5?
That's why I'm thinking something else like a fork or something internal. Still can't discount the driver either but until they can show me that it shifts normally or how to, it's stays at the dealer until it's fixed. Keep ya posted!
1. grind?
2. have the same problem going 4 to 5?
That's why I'm thinking something else like a fork or something internal. Still can't discount the driver either but until they can show me that it shifts normally or how to, it's stays at the dealer until it's fixed. Keep ya posted!
jobberone
Joined: Aug 2003
Posts: 2,062
Likes: 8
From: Kailua Kona HI
Originally Posted by t56gen3
I've had cars that will either upshift or downshift without an issue (but not both) that had bad synchros. Some would grind going one way and not other. If the car's under warranty then Chevy will figure it out. If they come back with "could not duplicate" then take your service writer for a ride and show him (I find that's the BEST way to get stuff fixed.)
Also you should be able to find an rpm if the clutch is completely released that you can force it to go. If it won't go then I don't know what the problem is. I would go with t56gens advice.
BTW I'm not saying you should grind the heck out of the gears forcing it to go.
Last edited by jobberone; Dec 2, 2005 at 08:07 PM.
Advanced
Joined: Aug 2000
Posts: 86
Likes: 0
From: Charlottesville VA
Shifting
I just picked up a Z16 with 5100 miles. After reading about your problem I took it out tonight to see if I could duplicate your problem but mine shifts 6th to 5th like butter. I tried it at least 10 times at various speeds and never had a problem. Sorry to hear about yours but, I also vote for a bent shifting fork. If you have no luck with the dealer I have a local guy who is excellent and can at least provide some additional advice based on 10 years of pure Corvette experience. Good luck!
Drifting
Joined: Jun 2005
Posts: 1,824
Likes: 1
From: Middleboro Massachusetts
The dealer told me when I had my problem that all my shift forks were bent. They also told me that they replaced all of them with steel shift forks. I was happy to get it fixed, but only thought about that comment later. I found the comment sort of interesting, like they were not steel before. Does anyone have any info. on the stock materials. I've heard along the way that GM in 04 had straightened out the problem.
Thread Starter
Melting Slicks
Joined: Aug 2005
Posts: 2,252
Likes: 0
From: NH
Originally Posted by zo6vetteman2003
The dealer told me when I had my problem that all my shift forks were bent. They also told me that they replaced all of them with steel shift forks. I was happy to get it fixed, but only thought about that comment later. I found the comment sort of interesting, like they were not steel before. Does anyone have any info. on the stock materials. I've heard along the way that GM in 04 had straightened out the problem.
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 32
From: Central Florida
First off, I've never had any tranny issues. But I remembered Steve Row posting some pictures of the shift fork replacements in his 02 Z.
Steve wrote: "Joe Hughes at Criswell rebuilt my trans and installed the steel (iron) shift fork along with syncro's and a lot of other parts.
Check out these pictures of the rebuild."
Found the post: Shift Fork Pics
Ranger
Steve wrote: "Joe Hughes at Criswell rebuilt my trans and installed the steel (iron) shift fork along with syncro's and a lot of other parts.
Check out these pictures of the rebuild."
Found the post: Shift Fork Pics
Ranger
Last edited by Ranger; Dec 3, 2005 at 08:27 AM.
Drifting
Joined: Jun 2005
Posts: 1,824
Likes: 1
From: Middleboro Massachusetts
Originally Posted by bb609
I read somewhere on here that the shift forks were changed to steel in mid '03 so I might be looking for the same fix. We'll see on Tuesday when I take it in.
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Drifting
Joined: Jun 2005
Posts: 1,824
Likes: 1
From: Middleboro Massachusetts
Originally Posted by Ranger
First off, I've never had any tranny issues. But I remembered Steve Row posting some pictures of the shift fork replacements in his 02 Z.
Steve wrote: "Joe Hughes at Criswell rebuilt my trans and installed the steel (iron) shift fork along with syncro's and a lot of other parts.
Check out these pictures of the rebuild."
Found the post: Shift Fork Pics
Ranger
Steve wrote: "Joe Hughes at Criswell rebuilt my trans and installed the steel (iron) shift fork along with syncro's and a lot of other parts.
Check out these pictures of the rebuild."
Found the post: Shift Fork Pics
Ranger
Thread Starter
Melting Slicks
Joined: Aug 2005
Posts: 2,252
Likes: 0
From: NH
Originally Posted by Ranger
First off, I've never had any tranny issues. But I remembered Steve Row posting some pictures of the shift fork replacements in his 02 Z.
Steve wrote: "Joe Hughes at Criswell rebuilt my trans and installed the steel (iron) shift fork along with syncro's and a lot of other parts.
Check out these pictures of the rebuild."
Found the post: Shift Fork Pics
Ranger
Steve wrote: "Joe Hughes at Criswell rebuilt my trans and installed the steel (iron) shift fork along with syncro's and a lot of other parts.
Check out these pictures of the rebuild."
Found the post: Shift Fork Pics
Ranger
Thread Starter
Melting Slicks
Joined: Aug 2005
Posts: 2,252
Likes: 0
From: NH
Originally Posted by zo6vetteman2003
Yes, I have an early 03, bought it in July 03', I remember hearing the same thing. Take a look on your drivers door on the inside end. I believe a manufacturers date is there.
jobberone
Joined: Aug 2003
Posts: 2,062
Likes: 8
From: Kailua Kona HI
Originally Posted by Ranger
First off, I've never had any tranny issues. But I remembered Steve Row posting some pictures of the shift fork replacements in his 02 Z.
Steve wrote: "Joe Hughes at Criswell rebuilt my trans and installed the steel (iron) shift fork along with syncro's and a lot of other parts.
Check out these pictures of the rebuild."
Found the post: Shift Fork Pics
Ranger
Steve wrote: "Joe Hughes at Criswell rebuilt my trans and installed the steel (iron) shift fork along with syncro's and a lot of other parts.
Check out these pictures of the rebuild."
Found the post: Shift Fork Pics
Ranger
Team Owner
Joined: Aug 1999
Posts: 69,020
Likes: 0
From: Bagpipes put the "fun" in "funeral"
Originally Posted by bb609
Newbie here...just took delivery of an '03 Blk/Blk Z06 w/2600 miles yesterday, my 4th Vette. First time out, I found out why people install the CAGS eliminator. What a pain! I've figured out how to beat it in upshifting already but I can't downshift from 6 to 5 at all, must go from 6 to 4. Is this CAGS at work or do I just not know how to shift a manual anymore???
Drifting
Joined: Jul 2004
Posts: 1,756
Likes: 6
From: Gulf of Mexico Florida West Coast
Out saturday XXX mph downshift into 5th with fluid motion. I have a B&M ripper so maybe that helped. I do not recall having this problem with the stock shifter. It is still under warranty, get is checked out. With no disrespect maybe you should practice, afterall you just got it (great job!)
I sucked when I first got this car, remember this car is a brute. Its no VW, Good Luck.
I sucked when I first got this car, remember this car is a brute. Its no VW, Good Luck.
Burning Brakes
Joined: Jun 2004
Posts: 1,240
Likes: 2
From: Cedar Rapids Iowa
It took me about a month to get used to the shifter. Before that I had a lot of trouble downshifting quickly into the gear that I wanted. Once you get used to it, it works fine. I like the stock shifter now. The key is not to force the shifter and to let the centering springs do the work.
Instructor
Joined: Apr 2013
Posts: 115
Likes: 0
From: Toronto ON
Newbie here...just took delivery of an '03 Blk/Blk Z06 w/2600 miles yesterday, my 4th Vette. First time out, I found out why people install the CAGS eliminator. What a pain! I've figured out how to beat it in upshifting already but I can't downshift from 6 to 5 at all, must go from 6 to 4. Is this CAGS at work or do I just not know how to shift a manual anymore???
Thanks.
