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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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SBM Programming/RPO Configuration

The service SBM's EEPROM chip must be programmed with the proper RPO configurations. The EEPROM stores information regarding the vehicle options and point of sale. when the SBM is replaced, the SBM must be programed to identify the following information:
^ Real Time Damping (RTD).
^ Memory Options.
^ Tire Pressure Monitor (TPM).
^ HVAC.
^ Dual Zone HVAC.
^ Country of Sale (US, Canada, Europe, Gulf, etc.).

If the SBM is not properly programmed, the vehicle will exhibit a no-crank condition. If the SBM is not properly configured, the SBM will set default values for some systems, which could cause malfunctions in other systems.