GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM)
Table 2: Powertrain Control Module (PCM)

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. Brake pedal released.

Battery Voltage

Data

0-15 volts

14 volts

Brake Applied Output

Outputs

ON/OFF

ON

BTSI Solenoid

Outputs

ON/OFF

OFF

Ignition 1 Signal

Outputs

ON/OFF

ON

Remote Start

Input

ON/OFF

OFF

Powertrain Control Module (PCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, with the engine OFF. Transmission shift lever in the PARK position. Brake pedal released.

Current Gear

Transmission Data

--

--

TR Sw. A/B/C/P

Transmission Data

Park, Park/Reverse, Reverse, Reverse/Neutral, Neutral, Neutral/Drive 4, Drive 4, Drive 4/Drive 3, Drive 3, Drive 3/Drive 2, Drive 2, Drive 2/Drive 1, Drive 1, Invalid, Open

--

TCC Brake Switch

 

ON/OFF

OFF