GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 TrailBlazer - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E 🢒 Automatic Transmission Controls Schematics
Figure 1:

Transmission Controls
Object Number: 878318 Size: FS
Master Electrical Component List
Transmission Component and System Description
PNP Switch and Indicator
OBDII Symbol Description Notice
IGN 0, TBC IF, TBC ACC, FRT WPR, and RAIN Fuses
Figure 2:

PNP Switch and Indicator
Object Number: 878320 Size: FS
Master Electrical Component List
Transmission Component and System Description
Vehicle Speed Sensor
Transmission Controls
OBDII Symbol Description Notice
Data Link Connector and SP205
G108
Figure 3:

Vehicle Speed Sensor
Object Number: 878322 Size: FS
Master Electrical Component List
Transmission Component and System Description
PNP Switch and Indicator
OBDII Symbol Description Notice