https://ls1tech.com/forums/ Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super en Fri, 22 May 2026 02:02:52 GMT vBulletin 60 https://ls1tech.com/forums/images/misc/rss.jpg https://ls1tech.com/forums/ https://ls1tech.com/forums/ls4-performance/1984685-transmission-question.html Mon, 27 Apr 2026 06:14:35 GMT Hey guys, I know this is a dead forum but hoping somebody sees this. My 05 GP-GXP needs transmission repair or replacement. Just wondering if the GXP with Tap shift has any differences from the other... Hey guys, I know this is a dead forum but hoping somebody sees this. My 05 GP-GXP needs transmission repair or replacement. Just wondering if the GXP with Tap shift has any differences from the other LS4 transmissions or are they interchangeable. Are the transmissions from the supercharged GTP-the same as the GXP?

What about parts? Who's the go to supplier now?

Depending on what I find, I've got to decide if I want to repair the car or just cut my losses and replace the whole vehicle.

TIA ]]> LS4 Performance corsair231 https://ls1tech.com/forums/ls4-performance/1984685-transmission-question.html