Callaway engineers have performed extensive vehicle testing and validation in order to ensure that your Callaway provides reliable service. However, if a problem should arise that requires technical attention, please follow this procedure:

1. Contact your closest Callaway-Authorized GM Dealer and discuss the symptoms with the Dealer’s Service Manager. If required, make an appointment with the Dealer to bring the car in, or have the car transported to the Dealer, per the Dealer’s recommendation. If there is no Callaway-Authorized Dealer nearby, you may follow this procedure with your closest Buick, Chevrolet, GMC or Cadillac Dealer.
2. If you bring your car to a Dealership that is not a Callaway-Authorized Dealer, please be sure to tell the Service Manager to contact Callaway Technical Service upon arrival, prior to performing any vehicle diagnostics. This will facilitate quicker, more satisfactory repair.
3. For accurate, timely updates, always contact the Dealership regarding the status of your Callaway’s repair, not Callaway.
4. When your Callaway was assembled, Callaway affixed a label to its under-dash diagnostic port in order to prevent the dealer from recalibrating or updating the ECM (engine control module) without contacting Callaway first. If the Dealer informs you that they plan to re-flash or update the ECM calibration, please remind him to contact Callaway first to arrange for re-installation of the Callaway calibration. Otherwise, “Service Engine Soon” lights will be triggered and poor engine performance will result.
5. Do not pay the Dealer for any Callaway-associated warranty repairs. Callaway policy is to reimburse the Dealer directly for all applicable warranty-associated parts and labor.