Scan Tool Data List

WARNING: This page is about a different variant/trim than selected.

The Transmission Scan Tool Data List contains manual transmission related parameters that are available on the scan tool. The list is arranged in alphabetical order. A given parameter may appear in any one of the data lists, and in some cases may appear more than once, or in more than one data list in order to group certain related parameters together.

A complete list of all engine related scan tool parameters can be found in the Scan Tool Data List in Engine Controls - 3.8 L.

Use the Transmission Scan Tool Data List only after the following is determined:

The Transmission Diagnostic System Check is completed
No Diagnostic Trouble Codes (DTCs)
On-board diagnostics are functioning properly

Scan tool values from a properly running engine may be used for comparison with the engine you are diagnosing. The Transmission Scan Tool Data List represents values that would be seen on a normally running engine.

IMPORTANT: A scan tool that displays faulty data should not be used. The scan tool condition should be reported to the manufacturer. Use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement.

Only the parameters listed below are referenced in this service manual for use in diagnosis. If all values are within the typical range described below, refer to Symptoms - Manual Transmission for diagnosis.

The column labeled Data List indicates where a parameter can be located on the scan tool. Refer to the scan tool operating manual for the exact locations of the data lists. The following is a description of each term listed:

Cruise: Cruise Control Data

Eng 1: Engine Data 1

Eng 2: Engine Data 2

EGR: EGR Data

EVAP: EVAP Data

Fuel Trim: Fuel Trim Data

Misfire: Misfire Data

TAC: TAC Data

Fig 1: Scan Tool Data List

Courtesy of GENERAL MOTORS CORP.