For 1990-2009 cars

Table 1: | Body Control Module (BCM)
Table 2: | Engine Control Module (ECM)

#### 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.
Battery 1 | Ignition | Volts | 0-25 V
Power Mode | Ignition | OFF/ACCY/RUN/CRANK | RUN
Shifter Lock Fbbk | Chassis Data | High/Low | High

#### Engine Control Module (ECM)

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.
Battery 1 | TCM | Volts | 0-25 V
Shifter Inhibit | TCM | Low TFT/Normal | Normal