2000 GMC Envoy Owner's Manual - Page 16

3. To program your keyless entry transmitter, press the UNLOCK button within five seconds of programming the memory button. You will hear a chime to confirm programming of the transmitter. When your vehicle is in PARK (P), push and release the numbered memory button you just stored. The seat will move to the set position. You will hear one chime. Repeat Steps 1 and 2 to readjust the seat. The transmitter need not be reprogrammed unless it needs to correspond to the other numbered memory button. If there is a third driver, use the seat adjuster switch to adjust the seat. Pressing any of the seat adjuster switches, the SET button or pressing the desired memory button twice will cause the seat to stop moving. If you push the numbered button to adjust the seat and start the vehicle while the seat is still adjusting, adjustment will pause while the ignition is in START. Adjustment will resume after the ignition is in RUN. Heated Front Seats This control is located on the side of the seat. This feature will quickly heat the lower cushion and lower back of the driver and front passenger seats for added comfort. Press the lower part of the switch to turn the heater on low. Press the upper part of the switch to turn the heater on high. Put the switch in the center position to turn the heater off. The passenger's safety belt must be engaged for the heated seat feature to work on the passenger's seat. 1-4