Gear ratio, how do I tell?

[withac]

I have a 2000 Tahoe 4X4. The manual lists either a 3.73 or 4.10. I looked in the door jambs and under the hood and I don't see anything to tell me which it has, how do I find out?

 

[Sepiroth]

check in the glove box for your rpo sticker.
Then go here http://aplsweb.com/Topics/TopicPix/RPO.pdf

 

[WackAssLife]

Take your rear differential cap off, count the ring teeth and divide that number by the number of pinion teeth.

 

[withac]

check in the glove box for your rpo sticker.
Then go here http://aplsweb.com/Topics/TopicPix/RPO.pdf

I scoured the doc you gave me a link to and finally found some gear ratio codes. It listed one for the rear axle and not the front. I assume the front would be the same otherwise you'd tear things up when you put it in 4X4. I came up with 3.73, is that the most common one?

 

[Sepiroth]

Most common I would say, yes.

 

[withac]

Most common I would say, yes.

Thanks.

 

[Sepiroth]

You're welcome. Glad to help out.