GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Pickup - 4WD 🢒 Body and Accessories 🢒 Data Link Communications 🢒 Keyless Entry Component Views
Figure 1:

Crossbody Wiring
Object Number: 312725 Size: MF
(1)Crossbody Harness
(2)C305
(3)Power/Heated Seat Harness, RF
(4)Heated Seat Connector, RF
(5)Cellular Phone Antenna
(6)Heated Seat Harness, RR
(7)C304
(8)Power/Heated Seat Harness
(9)C271 (Inline)
(10)Heated Mirror Relay
(11)Door Lock Inversion Module
(12)G202
Figure 2:

Remote Keyless Door Lock Receiver
Object Number: 375308 Size: MF
(1)Remote Keyless Transmitter
(2)Remote Control Door Lock Receiver