OEM GMC Envoy TPMS Sensor

GMC Envoy TPMS Sensor Parts and Q&A

• TPMS Sensor
  25774007
  Q: How to replace the TPMS Sensor on GMC Envoy?

  A:

  Begin by elevating the vehicle using a proper support to access the tire/wheel assembly for replacement. The sensor's valve and cap must be placed on a clean surface before tire dismount while ensuring both components are aluminum and nickel plated to avoid corrosion. Start by orienting the bead breaking fixture perpendicular to the valve stem then insert the tire iron or pry bar in an area slightly behind the sensor body to pry the tire bead over the mounting/dismounting head. Rotate the tire/wheel assembly with a tire machine in a clockwise direction to move tire beads toward the wheel rim's exterior before repeating the procedure for the inner bead position. Check inside the tire alongside wheel surfaces for remaining tire sealant before starting tire replacement. The installation process starts by uninstalling the tire pressure sensor nut then removing the sensor. Prior to mounting the sensor begin by cleaning the grommet area and insert the sensor into the wheel hub with the air outlet located at the wheel's back then torques the nut to 7 N.m (62 lb in) while maintaining parallel sensor positioning relative to the wheel internal surface. To start reinstalling the tire position the mounting/dismounting head at 180 degrees of the valve stem then set the bead transition area at 45 degrees counterclockwise from the valve stem before rotating the tire/wheel assembly in a clockwise direction to move both tire beads inside the wheel rim while repeating the procedure for the outside bead. Service replacement tire pressure sensors require 32 km/h (20 mph) wheel speed maintenance for minimum 10 seconds so the internal roll switch can activate before PDMs memory learning begins. Install the tire/wheel assembly onto the vehicle before lowering it to learn the tire pressure sensors.