Questions & Answers for: 2003 gmc envoy thermostat

2003 gmc 4.2l envoy coolant temp below thermosat rating.. I replaced the thermostat 2 months ago. No problems until now getting the same code.. maybe the same problem, if its not getting to 195f its ...

i need to change my thermostat on my 2003 gmc envoy and do not know where it is located its behind the alternator ,thermostat and housing is 1 unit,cant be purchased separately.

2003 GMC Envoy. The scanner show the following "code 128", what this mean. This code indicates that the coolant has not reached operating temperature, this is usually caused by a stuck open thermostat

where is the coolant thermostat located in a 2003 gmc envoy? The thermostat is behind the alternator and under the pcm on the drivers side of the engine.

...2003 gmc envoy? If you have the 6cyl engine. on the left side of engine, below alternator, its built into the houshing that the hose is attached to. Dont keep what engine your car has a secret. it ...

how to replace thermostat on a 2003 gmc envoy xl 4.2L Remove the alternator, drain radiator, remove the drivers side tire to gain access.

2003 GMC Envoy Service Engine light on. OBD2 Code is P0128 Ah the famous P0128.....It's 1 of 2 things. If your fan is not engaged constantly (would sound like an airplane or big rig everytime you step

just replaced thermostat and temp gauge is reading 200. is that normal or ok. 2003 envoy that's very normal, beacuse 2003 envoy and trail blazer use a 192 degrees thermostat.

GMC Envoy 2003 overheating GMC Envoy 2003 has been overheating. Thermostat was checked working fine. Power flush done and no leaks found. Water pump replaced 1 wk ago and overheated again. What can be

...gmc envoy 2004 xuv the check engine light come on and the code is po128 More than likely the thermostat is stuck open. You should replace the thermostat and the temp sensor. See picture below for ...