GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Instrument Panel-Right Front


Object Number: 852231  Size: LF
(1)Instrument Panel
(2)Switch Housing
(3)Rear Parking Assist (RPA) Disable Switch
Figure 2:

Under RR Seat (Short Wheelbase)


Object Number: 1522629  Size: LF
(1)LR Seat
(2)Rear Parking Assist (RPA) Diagnostic Connector
(3)Rear Object Sensor Control Module
Figure 3:

Left Side of the Luggage Compartment (Long Wheelbase, Except Avalanche and Escalade EXT)


Object Number: 1522630  Size: LF
(1)Left Rear Quarter Panel
(2)Rear Parking Assist (RPA) Diagnostic Connector
(3)Rear Object Sensor Control Module
Figure 4:

Under Left Rear Passenger Seat (Avalanche and Escalade EXT)


Object Number: 1562752  Size: LF
(1)C415 Body Extension Jumper Harness to Body Harness
(2)Rear Parking Assist (RPA) Display
(3)Left Rear Inner Door Panel
(4)Rear Object Sensor Control Module
(5)Rear Parking Assist (RPA) Diagnostic Connector
(6)Electronic Suspension Control (ESC) Module
Figure 5:

RR of Cargo Area


Object Number: 1402938  Size: MF
(1)Rear Parking Assist (RPA) Display
(2)RR D Pillar Trim Panel
(3)Speaker - Right D Pillar
(4)Door Lock Switch - Rear Cargo
Figure 6:

Rear Object Sensors


Object Number: 1402937  Size: MF
(1)Rear Fascia
(2)Object Sensor - RR Corner
(3)Object Sensor - RR Middle
(4)Object Sensor - LR Middle
(5)Object Sensor - LR Corner