The gear shift on my 2004 gmc envoy does not move from park.

Cheak the brake pedel swich it work a swich in the gear seleter

Hello had same problen and today, all i did was move the switch on the brake pedal by hand and problem solved!! Thank for your help.

Does your shift indicator show something other than Park? If so, your cable has come off at the transmission underneath the vehicle. The retainer is not holding the cable end on the transmission lever. You can also get it to release from the locked position, by taking the screws from the storage bin under the armrest, and taking the bin out, allowing access to the shifter mechanism under the console. On the right back side, there is a large silver headed button that you can push in, and the shifter should move.