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System Testing: Notes

CAUTION: DO NOT  replace PASSLOCK(R) module unless there are no VCM DTCs and a current PASSLOCK(R) module DTC exists after system check and DTC test has been completed. DO NOT  replace PASSLOCK(R) module based on history codes.
NOTE: System tests are written specifically for General Motors' Tech 2 scan tool. A generic scan tool may not be capable of performing all necessary test functions.