GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 TrailBlazer - 4WD 🢒 Driver Information and Entertainment 🢒 Cellular, Entertainment, and Navigation 🢒 Radio/Navigation System Schematics
Figure 1:

Power, Ground, Serial Data, and Digital Radio Receiver
Object Number: 2081519 Size: FS
Figure 2:

Base Radio - without Rear Seat Audio Controls
Object Number: 2081522 Size: FS
Figure 3:

Base Radio - with Rear Seat Audio Controls
Object Number: 2081524 Size: FS
Figure 4:

Audio Amplifier Power, Grounds, and Premium Radio Low Level Audi Outputs without Rear Seat Audio Controls
Object Number: 2081529 Size: FS
Figure 5:

Audio Amplifier Power, Grounds, and Premium Radio Low Level Audi Outputs with Rear Seat Audio Controls
Object Number: 2081529 Size: FS
Figure 6:

Premium Raio Amplifier Outputs
Object Number: 2081540 Size: FS
Figure 7:

Steering Wheel Controls - STW
Object Number: 2081546 Size: FS