Trans/shifter problem
Thread Starter
Cruising
Joined: Oct 2004
Posts: 10
Likes: 0
Trans/shifter problem
I have a 2002 Z06. When I place the shifter in 3rd gear, I can move the entire shift assembly left or right. If I pull the shifter to the left towards the driver side, the shifter will almost touch the console. If I then push the shifter up into neutral, I cannot get to 1st or 2nd gear.
If I then place the shifter in 3rd, I can reposition the shift assembly in the middle and 1st and 2nd gear are accessable again.
I have never observed this behavior on a manual transmission before.
Is this a shifter problem?
Is this a linkage problem?
Is this a transmission problem?
Something else?
A little history. This problem started a little over a month after having the transmission, clutch and thowout bearing assembly replaced. It has been this way for 3 weeks.
I am working with the mechanic who replaced the trans. I am trying to be helpful since he does not work on that many Vettes.
Thanks,
pat
If I then place the shifter in 3rd, I can reposition the shift assembly in the middle and 1st and 2nd gear are accessable again.
I have never observed this behavior on a manual transmission before.
Is this a shifter problem?
Is this a linkage problem?
Is this a transmission problem?
Something else?
A little history. This problem started a little over a month after having the transmission, clutch and thowout bearing assembly replaced. It has been this way for 3 weeks.
I am working with the mechanic who replaced the trans. I am trying to be helpful since he does not work on that many Vettes.
Thanks,
pat
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
As a guess, I'd say the bolt that retains the shifting rod is loose. You have to pull off the console and shift boot(s) to see the mechanism. There's a single shaft that controls your gear changes, and it's retained by torx head screw(s).
Le Mans Master
Joined: Oct 2008
Posts: 8,891
Likes: 981
From: Whitby Ont.
Ask me how I know
Thread Starter
Cruising
Joined: Oct 2004
Posts: 10
Likes: 0
I would think this is the problem, also if there is any kind of oil film at all on the output shaft of the shifter box that goes in the clamp,it will not tighten and grip enough to stop from slipping,need to wipe it down with alcohol and reinsert the bolt and tighten.
Ask me how I know
Ask me how I know
Here is an observation. I can't figure out how this could be a rotational slipage unless there is a groove all the way around the shaft that would allow the rotational slippage but at the same time prevent any vertical slippage. If it were a loose bolt pushing on a cylindrical shaft, the movement would not be restricted to just rotational. I would anticpate slippage along the length of the shaft also. But that is not what I observe. The shifter's H pattern seems to work fine. Provided it has enough room to operate. Sorry if that is an incomprehensible explanation.
pat
Last edited by mpdillon; Feb 21, 2012 at 09:31 PM.
Le Mans Master
Joined: Oct 2008
Posts: 8,891
Likes: 981
From: Whitby Ont.
OK how? But first, where is this bolt? Is it at the shifter or at the transmission? Can I get at it when the console is removed or do I have to drop the rear and torque tube again?
Here is an observation. I can't figure out how this could be a rotational slipage unless there is a groove all the way around the shaft that would allow the rotational slippage but at the same time prevent any vertical slippage. If it were a loose bolt pushing on a cylindrical shaft, the movement would not be restricted to just rotational. I would anticpate slippage along the length of the shaft also. But that is not what I observe. The shifter's H pattern seems to work fine. Provided it has enough room to operate. Sorry if that is an incomprehensible explanation.
pat
Here is an observation. I can't figure out how this could be a rotational slipage unless there is a groove all the way around the shaft that would allow the rotational slippage but at the same time prevent any vertical slippage. If it were a loose bolt pushing on a cylindrical shaft, the movement would not be restricted to just rotational. I would anticpate slippage along the length of the shaft also. But that is not what I observe. The shifter's H pattern seems to work fine. Provided it has enough room to operate. Sorry if that is an incomprehensible explanation.
pat
Le Mans Master
Joined: May 2007
Posts: 5,393
Likes: 17
From: Belleville Mich.
http://forums.corvetteforum.com/1571151292-post2.html
Here you go.
Look at these two proceedures, more so, the second one.
Good luck.
Here you go.
Look at these two proceedures, more so, the second one.
Good luck.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Most likely the FOUR screws that secure shifter to the shift box are LOOSE or the TWO fasteners that secure the shift box to the Torque Tube are loose:
If it were me,, I would get a better shifter!
KIRBAN.
If it were me,, I would get a better shifter!
KIRBAN.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
