K 3500 Truck 4WD V8-6.6L DSL Turbo VIN 1 (2001)
Body Control Module: Reading and Clearing Diagnostic Trouble Codes
With Diagnostic Scan Tool
PROCEDURE
A Tech II or equivalent Scan tool must be used to retrieve Diagnostic Trouble Codes (DTCs) from the PCM memory. DTCs can no longer be
retrieved at the data link connector. This also eliminates the PCM function of flashing Code 12. Follow the instructions supplied by the Scan tool
manufacturer in order to access and read either current and/or history DTCs.
Without Diagnostic Scan Tool
A Tech II or equivalent scan tool must be used to retrieve Diagnostic Trouble Codes (DTCs) from the PCM memory. DTCs can no longer be retrieved at
the data link connector. This also eliminates the PCM function of flashing Code 12. Follow the instructions supplied by the scan tool manufacturer in
order to access and read either current and/or history DTCs.
With Diagnostic Scan Tool
PROCEDURE
Use a Tech II or equivalent Scan tool to clear Diagnostic Trouble Codes (DTCs) from the PCM memory. When clearing DTCs, follow the
instructions supplied by the Scan tool manufacturer.
NOTES:
^
Do not clear the DTCs unless directed to do so by the service information provided for each diagnostic procedure. All of the diagnostic data
that was saved along with the DTC (freeze frame data and/or malfunction history records) which may be helpful for some diagnostic
procedures will be erased from the memory when the DTCs are cleared.
^
Interrupting PCM battery voltage to clear DTCs is NOT recommended.
Without Diagnostic Scan Tool
PROCEDURE
Use a Tech II or equivalent Scan tool to clear Diagnostic Trouble Codes (DTCs) from the PCM memory. When clearing DTCs, follow the
instructions supplied by the Scan tool manufacturer.
NOTES:
^
Do not clear the DTCs unless directed to do so by the service information provided for each diagnostic procedure. All of the diagnostic data
that was saved along with the DTC (freeze frame data and/or malfunction history records) which may be helpful for some diagnostic
procedures will be erased from the memory when the DTCs are cleared.
^
Interrupting PCM battery voltage to clear DTCs is NOT recommended.
