GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C Pickup - 2WD 🢒 Body and Accessories 🢒 Seats 🢒 Power Seat Component Views
Figure 1:

Power Seat Wiring Harness Connectors
Object Number: 277165 Size: MF
(1)C236 (Left)/C237 (Right)
(2)C212 (Left)/C229 (Right)
(3)C211 (Left)/C228 (Left)
Figure 2:

Power Seat Wiring
Object Number: 277991 Size: MF
(1)Front Tilt Motor
(2)Forward/Back Motor
(3)Heated Seat Element
(4)Rear Tilt Motor
(5)Seat Harness
(6)Power Seat Lumbar Motor and Solenoid Assembly
(7)C212 (RH) / C229 (LH)
(8)Crossbody Harness
(9)Seat Riser
(10)Power Seat Lumbar Switch
(11)Power Seat Adjuster Switch
(12)Heated Seat Module (Typical)
Figure 3:

Power Seat Switches
Object Number: 464882 Size: MF
(1)Front Tilt Switch
(2)Entire Seat Switch
(3)Rear Tilt Switch
(4)Lumbar Switch
(5)Heated Seat Switch
Figure 4:

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 5:

Rear Seat Harness (Luxury)
Object Number: 311436 Size: MF
(1)C311
(2)Floor
(3)Crossbody Harness
(5)C310
(6)Seat Belt Harness Connector
Figure 6:

Heated Rear Seats
Object Number: 327407 Size: MF
(1)Heated Seat Element, LH
(2)Heated Seat Element, RH