What gear ratio should I have?

[drumrob]

I have an 07 Silverado Crew Cab. Does anybody know what gear ratio I should have and what gear ratio is stock? My truck is a little slow when taking off and I have a programmer,exhaust,and intake. im thinking I might have the wrong gear ratio. I bought the truck lifted at the dealer. Thanks in advance

[dwill3015]

Check the sticker in your glovebox for one of there codes. Yours is probably the more common GT4 (3.73 ratio)

Gho axle rear,3.54 ratio
gk9 axle rear,4.63 ratio
gl3 axle rear,6.17 ratio
gm1 axle rear,2.59 ratio
gm3 axle rear,3.45 ratio
gm8 axle rear,2.56 ratio
gn9 axle rear,4.11 ratio
gq1 axle,std ratio
gty axle,wide track
gt4 axle rear,3.73 ratio
gt5 axle rear,4.10 ratio
gt7 axle rear,3.33 ratio
gt8 axle rear,4.10 ratio
gu2 axle rear,2.73 ratio
gu4 axle rear,3.08 ratio
gu5 axle rear,3.23 ratio
gu6 axle rear,3.42 ratio
gv2 axle rear,5.83 ratio

[drumrob]

Check the sticker in your glovebox for one of there codes. Yours is probably the more common GT4 (3.73 ratio)

Gho axle rear,3.54 ratio
gk9 axle rear,4.63 ratio
gl3 axle rear,6.17 ratio
gm1 axle rear,2.59 ratio
gm3 axle rear,3.45 ratio
gm8 axle rear,2.56 ratio
gn9 axle rear,4.11 ratio
gq1 axle,std ratio
gty axle,wide track
gt4 axle rear,3.73 ratio
gt5 axle rear,4.10 ratio
gt7 axle rear,3.33 ratio
gt8 axle rear,4.10 ratio
gu2 axle rear,2.73 ratio
gu4 axle rear,3.08 ratio
gu5 axle rear,3.23 ratio
gu6 axle rear,3.42 ratio
gv2 axle rear,5.83 ratio

cool thanks. What gear ratio should I have right now with 33" tires do you know?

[dwill3015]

I think some of the major off-road sites like 4wheel parts has a chart that will tell you what would be optimum for your setup.

[drumrob]

Cool Ill swing by then thanks for the help