Shift Solenoid Valve State and Gear Ratio

WARNING: This page is about a different car, the 2005 GMC Yukon XL, 2005 Chevrolet Suburban, and 2005 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Shift Solenoid Valve State and Gear Ratio; 4L80-E

Gear	1-2 SS Valve	2-3 SS Valve	Gear Ratio
1	ON	OFF	2.48:1
2	OFF	OFF	1.48:1
3	OFF	ON	1.00:1
4	ON	ON	0.75:1
R	ON	OFF	2.08:1