Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

Tranny getting stuck in 2nd

Thread Tools
 
Search this Thread
 
Old Jun 18, 2005 | 12:42 PM
  #1  
BAIN's Avatar
Thread Starter
10 Second Club
20 Year Member
iTrader: (5)
 
Joined: Jan 2003
Posts: 1,455
Likes: 0
From: Fort Worth, TX
Thumbs down Tranny getting stuck in 2nd

Just about every time I do a burnout and it shifts through the gears during then roll up to the line a freak thing happens. I go to footbreak it and if I go past 3000rpm it leaves the line in 2nd and stays in second all the way down the track so I have to let off before it hits the rev limiter.

I tested it and I don't think the burnout has that much to do with the problem. It seems like if I stall it past 2900-3000 it gets stuck in 2nd gear. I have talked to the guy who built the tranny and he said it was a tuning issue. Then I talked to the tuner and he said it was a tranny issue.

This is really starting to **** me off since I have a 4800 stall and can only leave the line at 3000rpm. My 60' is really suffering

Any insite on what is going on guys and possible ways to fix it?
Reply
Old Jun 18, 2005 | 01:26 PM
  #2  
TXCAMSS's Avatar
"All Motor 9 Second club member"
iTrader: (60)
 
Joined: Nov 2001
Posts: 3,235
Likes: 2
From: On the Bumper!
Default

The problem is a tranny code called limp home mode (PO705 I think) there are a coupe of them that work to gether to create this problem. It is set when you stall the car over 3000 rpm for over 3-5 seconds. It's a speed differential related safety mode that can be deleted with custom tuning. I used to get it all the time and it's hard on the tranny so once you know it's launching in second, be sure to back off and chalk it up for a wasted run. You can just pull over turn the key off for a few seconds and it will reset for you.

I just started launching at a slightly lower rpm until I could get it deletely permanently. I hope this helps you. Good luck!
Reply
Old Jun 18, 2005 | 01:28 PM
  #3  
TXCAMSS's Avatar
"All Motor 9 Second club member"
iTrader: (60)
 
Joined: Nov 2001
Posts: 3,235
Likes: 2
From: On the Bumper!
Default

BTW-you might not have alight on , but those codes should come up if you scan the car. Be sure to write them down so you will have them to refer back to them for the tuner.

It's not a tranny issue.
Reply
Old Jun 18, 2005 | 01:49 PM
  #4  
Roarin_8's Avatar
12 Second Club
20 Year Member
Photogenic
Liked
Loved
iTrader: (6)
 
Joined: Aug 2002
Posts: 4,578
Likes: 49
From: Kissimmee, FL
Default

Wow, this happens to all the LS1s if you stall it at 3000 rpm for 3-5 sec? That sucks.
Reply
Old Jun 18, 2005 | 01:52 PM
  #5  
jay_99z's Avatar
10 Second Club
iTrader: (5)
 
Joined: Nov 2003
Posts: 996
Likes: 1
From: Charleston, SC
Default

I think TX is right on the money. I've had it happen before too. Only had 2nd gear. I cleared the code and has ran perfect ever since. I think you can disable it. Maybe just turn the code off?
Reply
Old Jun 18, 2005 | 11:21 PM
  #6  
BAIN's Avatar
Thread Starter
10 Second Club
20 Year Member
iTrader: (5)
 
Joined: Jan 2003
Posts: 1,455
Likes: 0
From: Fort Worth, TX
Default

Thanks guys for the help. I will look into it
Reply
Old Sep 21, 2005 | 04:35 PM
  #7  
BAIN's Avatar
Thread Starter
10 Second Club
20 Year Member
iTrader: (5)
 
Joined: Jan 2003
Posts: 1,455
Likes: 0
From: Fort Worth, TX
Default

Sorry for the late responce. The car was down for a few months. Anyway the code TXCAMSS said to dissable has been, but it's still doing the same thing

Anymore ideas?
Reply
Old Oct 29, 2005 | 04:33 PM
  #8  
Roarin_8's Avatar
12 Second Club
20 Year Member
Photogenic
Liked
Loved
iTrader: (6)
 
Joined: Aug 2002
Posts: 4,578
Likes: 49
From: Kissimmee, FL
Default

TTT I had the same problem today. Had the shifter in first though so the tranny couldn't shift to the other gears. Tires wouldn't spin, would a line lock fix the issue?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo




All times are GMT -5. The time now is 08:41 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE