Scan Tool Data Definitions

Need a step-by-step guide?

Get an AI-powered repair guide with parts lists, cost estimates, and clear instructions for your Chevrolet hyperlink.

AI Repair Guides
Revenue RailIntent: manual

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.



Scan Tool Data Definitions

Body Control Module (BCM)
Battery Voltage Signal
Display indicates battery voltage. Measured in volts.

BTSI Solenoid
Displays the status of the control circuit for the shift lock control solenoid. ON indicates the control circuit is grounded. OFF indicates that the control circuit is not grounded.

Engine Control Module (ECM) / Powertrain Control Module (PCM)
BPP Circuit Signal
Display Applied or Released status of the brake pedal position signal.

Ignition 1 Signal
Display indicates ON when the ignition 1 input circuit of the module receives a battery signal from the ignition switch.

Stoplamp Pedal Switch
Display Applied or Released status of the stoplamp pedal switch.

TCC Brake Switch
Displays ON or OFF status of the TCC Brake switch.

TR Sw.
Displays Park, Reverse, Neutral, Drive 5, Drive 4, Drive 3, Drive 2 or Drive 1.