GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module
Table 2: Memory Mirror Module

Body Control Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Vehicle in PARK/Doors closed

Battery Voltage

Data

Volts

Varies

Door Handle Switch

Input 1

ACTIVE/INACTIVE

INACTIVE

Door Lock Relay

Outputs

ON/OFF

OFF

Door Lock Relay Feedback

Input 1

ON/OFF

OFF

Driver Door Jamb Switch

Input 1

ACTIVE/INACTIVE

INACTIVE

Driver Door Unlock Relay

Outputs

ON/OFF

OFF

Ignition 1

Input 1

ACTIVE/INACTIVE

ACTIVE

Ignition 3

Input 1

ACTIVE/INACTIVE

ACTIVE

Ignition Power Mode

Input 1

OFF/RUN/CRANK/ UNKNOWN

RUN

Julian Date of Build

Module Information 1

Numeric

Varies

Key-In-Ignition

Input 1

YES/NO

YES

Last Remote Function Actuation Command Since Wake-Up

Input 1

None/Lock/Unlock/Panic/Manual Resynch/Fob Program/Diag Acknowledge/Diag Request

Unlock

Manufacture Enable Counter

Module Information 1

0-255

0

Module Part Number

Module Information 1

Numeric

Varies

Passenger Door Unlock Input

Input 1

ACTIVE/INACTIVE

INACTIVE

Passenger Door Unlock Relay

Outputs

ON/OFF

OFF

Remote Function Actuation Message Since Wake-Up

Input 1

NONE/PANIC/Active Unlock Fob# /Active Lock/Prog Mode Cancel/Prog Successful/Prog Mode Ack/Manual Resync

Actv Unlock Fob#

Retained Accessory Power Calibration Number

Module Information 2

Numeric

Varies

Retained Accessory Power Suffix

Module Information 2

Two Letters

Varies

Security Calibration Number

Module Information 2

Numeric

Varies

Security Suffix

Module Information 2

Two Letters

Varies

Software Design Suffix

Module Information 1

Two Letters

Varies

Software Part Number

Module Information 1

Numeric

Varies

Vehicle Speed

Data

MPH/KPH

0

Memory Mirror Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Vehicle in PARK/Doors closed

Software Part Number

Module Information 1

Alpha Numeric

Varies

Revision Level

Module Information 1

Alpha

Varies

Julian Date of Build

Module Information 1

0 - 255

Varies

Year Module Built

Module Information 1

Numeric

Varies

End Part Number

Module Information 2

Alpha Numeric

Varies

Base Model Part Number

Module Information 2

Alpha Numeric

Varies

Battery Voltage

Data

Volts

Varies

Lt. Horiz. Mirror Pos.

Data

Volts

Varies

Lt. Vertical Mirror Pos.

Data

Volts

Varies

Rt. Horiz. Mirror Pos.

Data

Volts

Varies

Rt. Vertical Mirror Pos.

Data

Volts

Varies

Mirror Switch

Inputs

Idle/Up/Down/Left/Right

Idle

Memory Recall Switches

Inputs

Idle/Memory 1/Memory 2/Exit

Idle

Left Mirror Outputs

Outputs

Idle/Up/Down/Left/Right

Idle

Right Mirror Outputs

Outputs

Idle/Up/Down/Left/Right

Idle