Which gearing would be best for me
November 5th, 2009, 3:01 AM
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Join Date: May 2009
Location: South Texas
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It's about 1600$ to 2000$ out the door for new gears, if you have it done by a shop.
Be sure the shop reprograms your PCM with the new gear ratio, this way your speedometer will still be accurate, and your brake sensors won't go nutz.
Look at your RPO codes in your glove box. It's a white sticker which says "Service Parts Identification" and has a bunch of 3 digit alpha-numeric codes which identifies your truck's specific options packages. GT4 is 373s,GT5 is 410s, and GT6 is 342s.
There's a thread which identifies most of the RPOs in the Tech section of CF.
Be sure the shop reprograms your PCM with the new gear ratio, this way your speedometer will still be accurate, and your brake sensors won't go nutz.
Look at your RPO codes in your glove box. It's a white sticker which says "Service Parts Identification" and has a bunch of 3 digit alpha-numeric codes which identifies your truck's specific options packages. GT4 is 373s,GT5 is 410s, and GT6 is 342s.
There's a thread which identifies most of the RPOs in the Tech section of CF.
Also I have no speedometer. It was my GPS until it got stolen.
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pjr7269
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February 23rd, 2012 3:09 AM
