GM Service Manual Online
For 1990-2009 cars only
Table 1: Park Assist Module
Table 2: Park Assist Scan Tool Output Controls

Park Assist Module

Scan Tool Parameter

System State

Expected Value

Definition

Operating Conditions: Ignition ON/Engine OFF/Object Detection Switch ON

Battery Voltage

--

Varies

The scan tool displays volts. This is the current voltage of the battery.

Loudspeaker Feed Voltage Output

--

Varies

The scan tool displays volts. This is the output feed voltage to the radio measured in volts

Park Assist Disable 1 History

--

Varies

The scan tool displays Empty, Manual Disable, Park Brake, Hitch/Obj Attach, Reverse Ovrspeed, Inhibit, Sense Disturbance, Snow/Ice/Mud, Sensor Ring Trim. This is the status of the park assist disable history.

Park Assist Disable 2 History

--

Varies

The scan tool displays Empty, Manual Disable, Park Brake, Hitch/Obj Attach, Reverse Ovrspeed, Inhibit, Sense Disturbance, Snow/Ice/Mud, Sensor Ring Trim. This is the status of the park assist disable history.

Park Assist Disable 3 History

--

Varies

The scan tool displays Empty, Manual Disable, Park Brake, Hitch/Obj Attach, Reverse Ovrspeed, Inhibit, Sense Disturbance, Snow/Ice/Mud, Sensor Ring Trim. This is the status of the park assist disable history.

Park Assist Disable 4 History

--

Varies

The scan tool displays Empty, Manual Disable, Park Brake, Hitch/Obj Attach, Reverse Ovrspeed, Inhibit, Sense Disturbance, Snow/Ice/Mud, Sensor Ring Trim. This is the status of the park assist disable history.

Park Assist Disable 5 History

--

Varies

The scan tool displays Empty, Manual Disable, Park Brake, Hitch/Obj Attach, Reverse Ovrspeed, Inhibit, Sense Disturbance, Snow/Ice/Mud, Sensor Ring Trim. This is the status of the park assist disable history.

Park Assist Disable 6 History

--

Varies

The scan tool displays Empty, Manual Disable, Park Brake, Hitch/Obj Attach, Reverse Ovrspeed, Inhibit, Sense Disturbance, Snow/Ice/Mud, Sensor Ring Trim. This is the status of the park assist disable history.

Park Assist Disable 7 History

--

Varies

The scan tool displays Empty, Manual Disable, Park Brake, Hitch/Obj Attach, Reverse Ovrspeed, Inhibit, Sense Disturbance, Snow/Ice/Mud, Sensor Ring Trim. This is the status of the park assist disable history.

Park Assist Front Display LED CKT

--

OK

The scan tool displays Ok/Overcurrent. This is the state of the front display for the object detection system.

Park Assist Rear Display LED CKT

--

OK

The scan tool displays Ok/Overcurrent. This is the state of the rear display for the object detection system.

Park Assist Rear Red LED

--

Off

The scan tool displays Off/On. This is the state of the park assist rear red LED.

Park Assist Rear Y1 LED

--

Off

The scan tool displays Off/On. This is the state of the park assist rear Y1 LED.

Park Assist Rear Y2 LED

--

Off

The scan tool displays Off/On. This is the state of the park assist rear Y2 LED.

Park Assist Switch

--

Active

The scan tool displays Active/Inactive. This is the state of the park assist switch.

Park Assist Switch LED

--

Off

The scan tool displays Off/ON. This is the state of the park assist switch LED.

Park Assist Switch LED CKT

--

Ok

The scan tool displays Ok/Overcurrent. This is the state of the park assist switch led for the object detection system.

Park Assist System Status

--

Enable

The scan tool displays Disable, Enable, Inhibit, Failed/Block. This is the status of the park assist system.

Power Mode

--

Run

The scan tool displays Off, Accessory, Run and Crank Request. This is the state of the object detection system.

Rear Region 1

--

Varies

The scan tool displays No Detect, Zone 1, Zone 2, Zone 3, Zone 4, Zone 5, Zone 6, Zone 7, Zone 8. This is the state of the region the vehicle is in when the object detection system is active.

Rear Region 2

--

Varies

The scan tool displays No Detect, Zone 1, Zone 2, Zone 3, Zone 4, Zone 5, Zone 6, Zone 7, Zone 8. This is the state of the region the vehicle is in when the object detection system is active.

Rear Region 3

--

Varies

The scan tool displays No Detect, Zone 1, Zone 2, Zone 3, Zone 4, Zone 5, Zone 6, Zone 7, Zone 8. This is the state of the region the vehicle is in when the object detection system is active.

Sensor Feed Voltage Output

--

Varies

The scan tool displays Volts. This is the amount of volts being sent to the object sensors.

Vehicle Speed

--

0-mph

The scan tool displays MPH. This is the speed of the vehicle.


Park Assist Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

Clear History Data

Special Functions

The object alarm module clears the park assist disable history when commanded from the scan tool.

Rear Red LED

Special Functions

LED Test

The object alarm module illuminates the rear red LED when commanded ON from the scan tool.

Rear Yellow LED 1

Special Functions

LED Test

The object alarm module illuminates the rear yellow LED when commanded ON from the scan tool.

Rear Yellow LED 2

Special Functions

LED Test

The object alarm module illuminates the rear yellow LED when commanded ON from the scan tool.