This Preliminary Information communication provides information to the technician about vehicles that may have Check Engine Lamp with a current or history Diagnostic Trouble Codes P0C57, P0C58 and/or P0C62 set. If the concern is duplicate and no issues are found with the wiring and no resolution with normal diagnostics then replace the Motor B position sensor. Dealer may need to contact General Motors Technical Assistance Center for assistance due to part restriction.
