GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 TrailBlazer - 4WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Door Lock/Indicator Schematics
Figure 1:

Front Doors and Liftgate
Object Number: 2081469 Size: FS
Figure 2:

Rear Doors
Object Number: 2081471 Size: FS