LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

2004 Grand Prix DTC P0741

Thread Tools
 
Search this Thread
 
Old Sep 30, 2009 | 05:00 PM
  #1  
03gpgt's Avatar
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 2
Likes: 0
Default 2004 Grand Prix DTC P0741

Hopefully I'm not out of line posting this in the Front Drives section but I was hoping I could find a little help with my 2004 Grand Prix GT since this is such a tech heavy forum.

Car has a CEL. Read the code and got P0741 - Torque Converter Clutch (TCC) System - Stuck Off. The car shifts and drives just fine. I've read everything from a shorted out wire to torque converter is about to blow up.

Anything I can check myself before heading to the dealership? Fluid was just flushed three or four weeks ago. Car has ~80k miles. Current trans fluid looks fine and is within the correct range. CEL had come on before with the same code. When we took the car in to get the trans flushed the light had already gone out.

Car is worth about $4000 maybe... I'm not putting a $2500 trans in it.

I'd appreciate any help at all. The last thing I need to hear is the trans needs to be dropped and replaced... Thanks.
Reply
Old Sep 30, 2009 | 08:09 PM
  #2  
Pauls325's Avatar
TECH Resident
iTrader: (1)
 
Joined: May 2008
Posts: 800
Likes: 1
From: Minnetonka,MN or Fargo
Default

clear the code see if it comes back
Reply
Old Sep 30, 2009 | 08:18 PM
  #3  
Mgpeagle's Avatar
TECH Fanatic
iTrader: (6)
 
Joined: Jan 2007
Posts: 1,406
Likes: 0
From: Ain't tellin'
Default

It could be a bad TCC solonoid too. I have heard of those going bad quite a few times. Try this... While on the highway in 4th gear keep the foot on the gas and tap the brakes. Make sure the car is up to temp 1st. Look to see if the rpms go up, if they do then the torque converter is fine. Let us know.

-Mike
Reply
Old Sep 30, 2009 | 08:30 PM
  #4  
03gpgt's Avatar
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 2
Likes: 0
Default

What does tapping on the brakes in fourth gear do? Is that supposed to release the torque converter? I don't think the car is ever getting into fourth gear right now as it's stuck in the off position.

Thanks for the replies.
Reply
Old Sep 30, 2009 | 08:48 PM
  #5  
mike690003's Avatar
TECH Enthusiast
iTrader: (2)
 
Joined: Nov 2007
Posts: 555
Likes: 0
Default

It might be the PCS (Pressure control solenoid) Its about a $400 repair. It'll cause those same symptoms.
Reply




All times are GMT -5. The time now is 11:40 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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