GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Controls - 4.8L, 5.3L, and 6.0L 🢒 Shift Solenoid Valve State and Gear Ratio

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