2005 Pontiac Grand Prix upper radiator hose collapses bought new one but still does it

Either at the engine block located at the end of upper radiator hose. However it could be located in the lower radiator hose like mine was.

At the end of the hose that goes to the top of your radiator.

Thermostat should be found beneath the housing at the end of the top hose where that is attached to the engine block

replace radiator cap

actually, the ECM directing the sensor to actuate the switches. the engine thermostat is the actuator of the fans in the cooling system. and its located in the oulet port of the engine where the upper radiator hose is connected. (and or at the lower rad hose, some design on VWs).

The t-AT&T is located under the housing that is bolted to the intak manifold on the drivers side he the upper radiator hose is attached to. Remove the radiator hose from the housing. Remove the two bolts holding the housing to the intake manifold (a 10mm socket will work for this). Remove the housing. Remove the t-stat. Clean the mating surfaces of the t-stat housing and the intake manifold. Install the new thermostat. Install the housing. Reattach the hose to the housing. Top off the coolant in the radiator. Start the engine and let it idle until the cooling fans come on. Keep an eye on the coolant level in the radiator and top off as necessary. Once the fans come on replace the radiator cap and you should be good to go. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

does the upper and lower hoses seem to be the same temp when car begins to overheat? ore the radiator cooling fans coming on before the car overheats? did you pressure test the cooling system and radiator cap? also may want to remove the lower hose and flush the radiator. is the check engine light on and does it run bad?

Hello! Remove the engine cover...Follow the upper radiator hose to the thermostat housing...do not know which engine you have so here are pictures of both...#1 V6...#2 V8...Guru..saailer





I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

Don't Think you'll need a Diagram, Just Open Hood and Locate Upper Radiator Hose and Just take your hand follow the hose down to Your Engine,You'll Come to a Metal Dome with a Hose Clamp and you'll see 2 Bolt Heads .Remove Upper Hose From the E ngine and Then The Thermasat Housing with Those 2 Bolts.Under the Housing is where your Therma Stats Located..

you need to change the rad cap!