ATTENTION POLICE UPFITTERS….
INSTALLING A FLASHER MODULE?
If when installing an after-market flasher module and the rear tail lamps do NOT flash as expected, the Body Control Module (BCM) will require reprogramming. The reprogramming can be performed at your local General Motors dealership.
For information on the 2015 Chevrolet Tahoe PPV please refer to the 2015 Chevrolet Municipal Technical Guide… You can find this guide on the Body Builders Manual page…Select Light Duty>2015>Police/Special Service Vehicles
For specific detail pertaining to the 9C1/5W4 wire harness go to Technical Bulletin 118 located on the Technical Bulletins page of this website. Select the Technical Bulletin tab, followed by the SHOW ALL button on the page, and select the bulletin (#118)