GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C Pickup - 2WD 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Garage Door Opener Component Views
Figure 1:

Overhead Console
Object Number: 277977 Size: MF
(1)Auxiliary HVAC Control Logic Module
(2)Auxiliary HVAC Control Module, Rear
(3)Garage Door Opener
(4)Reading Lamps, Overhead Console
(5)Auxiliary HVAC Control Module, Front
Figure 2:

Overhead Console Wiring (Luxury)
Object Number: 311415 Size: MF
(1)Microphone Connector C306
(2)GPS Antenna Connector
(3)Crossbody Harness
(4)Garage Door Opener Connector