C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

2005 C6 Hard Shift 1-2

Thread Tools
 
Search this Thread
 
Old Apr 29, 2016 | 10:49 AM
  #1  
Ron R's Avatar
Ron R
Thread Starter
Drifting
 
Joined: Jul 2007
Posts: 1,712
Likes: 0
From: Tampa FL
Default 2005 C6 Hard Shift 1-2

2005 Vert with ~70k miles. I drove it from Florida to New Jersey (~1,100 miles), mostly going the speed limit I think my top speed was 90. Didn't overheat and basically performed flawlessly, no issues when stopping for gas.

When I got off the Interstate in NJ it was shifting HARD between 1-2. All other gears were fine. No check engine light. Checked the codes and the only thing there was an older hidden code about a misfire, which I cleared.

No mods to the vehicle or computer tunes.

The next day it ran and drove fine. About 3 days later I went for an hour drive, and it started doing it again toward the end, just hard in 1-2.

I left it at the office in NJ since I had to fly back to FL, but I'll have to deal with this when I get back up there next week. The torque tube was replaced a year ago and all new fluid was put in then. Haven't had time to check the fluid level yet, but haven't had any issues with it other than that and it's relatively low miles for its age and I've never been hard on it.

Any ideas?

Last edited by Ron R; Apr 29, 2016 at 10:51 AM.
Reply
Old Apr 29, 2016 | 11:35 AM
  #2  
irok's Avatar
irok
Safety Car
10 Year Member
 
Joined: May 2011
Posts: 3,807
Likes: 508
From: Oshawa, Ontario
Default

Originally Posted by Ron R
2005 Vert with ~70k miles. I drove it from Florida to New Jersey (~1,100 miles), mostly going the speed limit I think my top speed was 90. Didn't overheat and basically performed flawlessly, no issues when stopping for gas.

When I got off the Interstate in NJ it was shifting HARD between 1-2. All other gears were fine. No check engine light. Checked the codes and the only thing there was an older hidden code about a misfire, which I cleared.

No mods to the vehicle or computer tunes.

The next day it ran and drove fine. About 3 days later I went for an hour drive, and it started doing it again toward the end, just hard in 1-2.

I left it at the office in NJ since I had to fly back to FL, but I'll have to deal with this when I get back up there next week. The torque tube was replaced a year ago and all new fluid was put in then. Haven't had time to check the fluid level yet, but haven't had any issues with it other than that and it's relatively low miles for its age and I've never been hard on it.

Any ideas?
TCM transmission control module going bad.but that would be too easy.located in passenger front fender.it can cause that and will set a cel sooner than later.1-2 shift solenoid going south.even a throttle body can cause that symtom.Need a cel to set that will give you a clue.low on fluid

Last edited by irok; Apr 29, 2016 at 11:38 AM.
Reply
Old Apr 29, 2016 | 01:24 PM
  #3  
xBoostx's Avatar
xBoostx
Melting Slicks
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2006
Posts: 2,497
Likes: 261
From: Miami Florida
Default

It ain't broke imo so? don't fix it mine does it all day long not an issue.
Reply

Get notified of new replies

To 2005 C6 Hard Shift 1-2





All times are GMT -4. The time now is 03:34 PM.

story-0
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-1
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-2
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-3
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-4
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-5
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-6
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-7
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-8
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-9
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE