GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Envoy - 4WD 🢒 Body and Accessories 🢒 Cellular Communication 🢒 Cellular Communication Component Views
Figure 1:

Hands-Free Microphone
Object Number: 397514 Size: MF
(1)Hands-Free Microphone
(2)Dome Lamp Harness
(3)Overhead Console
Figure 2:

Sensing and Diagnostic Module Connection
Object Number: 357186 Size: MF
(1)Shifter Assembly
(2)Sensing and Diagnostic Module (SDM)
(3)Floor Handset Connector