GM Service Manual Online
For 1990-2009 cars only

Gear

Ratio

First

2.875

Second

1.568

Third

1.000

Fourth

0.697

Reverse

2.300

Counter

1.019

Differential 1.4L/1.5L/1.2L SOHC

3.750

Differential 1.4L DOHC

4.052