OEM GMC Envoy TPMS Sensor

GMC Envoy TPMS Sensor Parts and Q&A

• TPMS Sensor
  25774006
  Q: How to replace the TPMS Sensor on GMC Envoy?

  A:

  In order to replace Tire Pressure Sensor, first lift the vehicle on a convenient support and remove the tire/wheel assembly. Then, remove the tire from the wheel, making sure to set the cap and valve of the sensor on a clean and dry space so that it does not get damaged; the cap is of aluminum and the valve is made up of nicked-plated, and should not be replaced with other specifications. When prying the tire bead off the wheel, position the bead breaking fixture at a 90-degree angle to the valve stem and mount the mounting/dismounting head at a position near the tire iron or pry bar to be used, in a clock position to the sensor body. Using the tire machine, rotate the tire/wheel assembly clockwise until you move the tire bead to the outside of the wheel rim, and repeat for the inner bead. Unscrew the tire pressure sensor nut and keep the tire and wheel surfaces clear of any remaining tire sealant when removing the tire pressure sensor. For installation, clean the sealing area around the grommet, insert the sensor into the hole of the wheel with its air passage facing away from the wheel, and fitting in the sensor nut while facing its body parallel to the inside wheel surface and tighten it to 7Nm (62 inch lbs.). Before reinstalling the tire place mounting/dismounting head 180 degrees away from valve stem and bead transition 45 degrees to the left of valve stem, twist tire/wheel assembly clockwise to move tire bead to the insides of the rim of the wheel and do so again for outer bead. After reinstalling the tire/wheel assembly on the vehicle, observe that a service replacement tire pressure sensor was shipped in OFF mode and must be spun above 32 km/h (20 mph) for 10 sec at least before the sensor will close the internal roll switch and then lower the vehicle and learn tires pressure sensor.
• 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.