• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

Recent content by GXPerforms

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    Better acceleration by going from 255/45/18s to 255/35/18s? 2006 GXP

    So I love my Grand Prix GXP all except for the gear ratio suuucckckkksssssss! There is no reason I should be able to run all the way up to 108mph in second gear and I honestly wish the TCM was retuned so I could downshift into first at 45MPH since it runs all the way out to the 50-55ish MPH...
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    Turn Up Line Pressure or Shift Kit???

    My 2006 Grand Prix GXP with 119,000 miles has since I've owned it has had an occasional delayed engagement (taking off from a stop and banging into gear after revving) and sloppy shift problem (sometimes it'll shift painfully slowly). These problems are so intermittent. Some days the...
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    Bad wheel bearing???

    So my 2006 Grand Prix GXP has been acting up lately. My abs, traction control, and stability control light come on anytime I either hit a bump or turn at full lock to the left. I think I have it narrowed down to a bad wheel bearing and I think I've narrowed which one is causing the problems. I...
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    How To: Get The Most Miles Out of a 4T65E/4T64E-HD Transmission

    As all of you know, the 4T65E transmissions are notorious for dying in our cars, especially behind the 300+ horsepower 5.3L LS4 V8 (why in the world GM decided to put this transmission behind this motor is absolutely beyond me). I'm not a transmission expert by any means, however I usually do my...
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    How to Fix Broken Bolt Holes on Top of Front Bumper?

    So I have a 2006 Grand Prix GXP. The bolt holes on the top of the front bumper on the passenger side have been broken, I'm guessing the previous owner or owner before that had probably bumped into a pole or something of the like and broke them. Because these are broken the line between the...
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    2006 GXP - Removing Rear Speakers Completely (Monsoon System)

    I have a 2006 Pontiac Grand Prix GXP with the Monsoon system. I am nooott impressed with the system. The rear speakers rattle, however I do not feel like replacing them. I'd rather replace them with a sub in the trunk (since the rear speakers produce mainly bass anyway). I already have the...
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