It is located behind the alternator just above the thermostat. You will need to take the alternator off to be able to reach and change the sensor.
Coolant Temperature Sensor/Switch (For Computer)Engine, Left Front
It is on the drivers side of the block.
On the 05 4.2 it is tucked behind the alternator and difficult to see unless you are standing on the driver's side.
The ambient temperature sensor is located behind the front grill.
On a 2004 GMC Envoy, the coolant temperature sensor is typically located near the thermostat housing, which is on the engine block. It is usually found on the intake manifold or near the upper radiator hose. To access it, you may need to remove some components for better visibility. Always consult the vehicle's service manual for specific details and diagrams.
Engine coolant Sensor is bad. I have the same error on my 2005.
behind the alternator on the motor block.
Between the front grill and the radiator.
what cause a 2006 gmc envoy Denali to cut off wile driving
where is the map sensor located on a 2005 gmc envoy
In a 2003 GMC Envoy, the Ambient Air Temperature Sensor is typically located in the front of the vehicle, often near the grille or behind the front bumper. It may be mounted on the radiator support or within the air intake area. This sensor helps provide accurate temperature readings for the vehicle's climate control system. For specific access, consulting the vehicle's service manual may be helpful.
Mas air flow sensor