GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2003
🢒
TopKick C-Series (Conventional) C6/C7/C8
🢒
Transmission/Transaxle
🢒
Automatic Transmission - Allison
🢒 Pressure Switch and Solenoid Logic States
Pressure Switch and Solenoid Logic States
Range
C
D
E
REV
N
On
On
On
OFF
R
On
On
On
On
R*
OFF
On
On
On
4
OFF
OFF
On
OFF
3
On
OFF
On
OFF
2
On
OFF
OFF
OFF
1
OFF
OFF
OFF
OFF
OFF
On
OFF
OFF
*N04 and later at closed throttle