No on lights tails envoy 2002 - 2002 GMC Envoy

Check fuse's in the rear fuse box. LR PARK fuse #14 10A - RR PARK #17 10A - Fuse Block - Rear Beneath the left rear seat
An the park lamp relay #30 in same rear fuse box , Do you know what a BCM - body control module is ?
The body control module (BCM) provides a ground or control circuit to the park lamp relay coil circuit. When the park lamps are turned on, the BCM energizes the park lamp relay. Current flow is from the park lamp relay to the individual park lamp circuit fuses and to their respective park, tail, marker, and license lamps. The front park and marker lamps are grounded at G107 and G103. The tail lamps are grounded at G401 and G402