GM Service Manual Online
For 1990-2009 cars only

ABS Data:

A brief description of all ABS/ETS/TCS data parameters available on the scan tool are listed below:

Left Front Wheel Speed: The scan tool displays: Km/h / MPH--Display shows actual wheel speed

Right Front Wheel Speed: The scan tool displays: Km/h / MPH--Display shows actual wheel speed

Left Rear Wheel Speed: The scan tool displays: Km/h / MPH--Display shows actual wheel speed

Right Rear Wheel Speed: The scan tool displays: Km/h / MPH--Display shows actual wheel speed

Engine Speed: The scan tool displays: 0-10200 RPM--This is essentially a digital tachometer display

Brake Switch: The scan tool displays: Applied/Released--This parameter indicates the state of the brake switch

Valve Relay State: The scan tool displays: On/Off--This parameter indicates the state of the valve relay

Pump Monitor State: The scan tool displays: On/Off--This parameter indicates the state of the return pump relay

TCS Switch State: The scan tool displays: On/Off--This parameter indicates the state of the traction control switch

ETS Data:

A brief description of all ETS data parameters available on the scan tool are listed below:

Engine Speed: The scan tool displays: 0-10200 RPM--This is essentially a digital tachometer display

Vehicle Speed: The scan tool displays: Km/h / MPH--Display shows actual vehicle speed

EBCM to PCM Requested Torque: The scan tool displays: -100 to 510N·m--This parameter represents the requested engine torque from the EBCM to the PCM

PCM to EBCM Delivered Torque: The scan tool displays: -100 to 510N·m--This parameter represents the delivered engine torque from the PCM to the EBCM

PCM Torque Reduction: The scan tool displays: Active/Inactive--This parameter indicates whether the PCM is actively reducing engine torque

PCM Inhibit TCS: The scan tool displays: Yes/No--This parameter indicates if the PCM is temporally inhibiting ETS because of high catalytic converter temperature or the engine coolant temperature is outside the normal range

ETS Status EBCM: The scan tool displays: Enable/Disable-- This parameter indicates the state of the ETS based on if the operator has disabled ETC by pressing the TRAC switch, or if the ETS is disabled because of a malfunction

ETS Status PCM: The scan tool displays: Enable/Disable--This parameter indicates if the PCM is permanently inhibiting ETC because the PCM has set a DTC(s) that turns on the CHECK ENGINE indicator

ETS ENABLED: The scan tool displays: Enabled/Disabled--This parameter indicates if the ETS is currently in a ETS event or not

TCS Data:

A brief description of all TCS data parameters available on the scan tool are listed below:

Engine Speed: The scan tool displays: 0-10200 RPM--This is essentially a digital tachometer display

Vehicle Speed: The scan tool displays: Km/h / MPH--Display shows actual vehicle speed

EBCM to PCM Requested Torque: The scan tool displays: -100 to 510N·m--This parameter represents the requested engine torque from the EBCM to the PCM

PCM to EBCM Delivered Torque: The scan tool displays: -100 to 510N·m--This parameter represents the delivered engine torque from the PCM to the EBTCM

PCM Torque Reduction: The scan tool displays: -Active/Inactive--This parameter indicates whether the PCM is actively reducing engine torque

PCM Inhibit of TCS: The scan tool displays: Yes/No--This parameter indicates if the PCM is temporarily inhibiting TCS because of high catalytic converter temperature or the engine coolant temperature is outside the normal range

TCS Status EBCM: The scan tool displays: Enable/Disable-- This parameter indicates the state of the TCS based on if the operator has disabled TCS by pressing the TRAC switch, or if the TCS is disabled because of a malfunction

TCS Status PCM: The scan tool displays: Enable/Disable--This parameter indicates if the PCM is permanently inhibiting TCS because the PCM has set a DTC(s) that turns on the CHECK ENGINE indicator

TCS State EBCM: The scan tool displays: Active/Inactive--This parameter indicates if the TCS is currently in a TCS event or not