Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Scan Tool Data List



Scan Tool Data List (5L40-E/5L50-E)

Use the Scan Tool Data List under the following conditions:

* The Diagnostic System Check - Vehicle has been completed
* The On-Board Diagnostics are functioning properly
* No DTCs are present

Important: Do not use a scan tool that displays faulty data. Report the condition to the scan tool manufacturer. The use of a faulty scan tool can result in misdiagnosis and the unnecessary replacement of parts.

Only the parameters listed below are used in this Service Data for diagnosing. If a scan tool displays other parameters, the values are not recommended by General Motors for use in diagnosis.

Scan tool values below were recorded under the following conditions:

* Engine at idle
* Upper radiator hose is hot
* Closed throttle
* Transmission in PARK
* Closed loop operation
* Accessories OFF
* Brake pedal not applied