Top radiator hose connects to engine through a fitting which is held on by 2 capscrews approx 1/2 inch or 13 mm. Remove the screws then pop the fitting loose and t-seat will be exposed. New one comes with a new gasket. Clean mating faces before reassembly and don’t install new stat upside down.
SOURCE: 2002 Pontiac Grand Prix Thermostat
as you face the engine the thermostat bell is on the right (drivers side) Follow the radiatoe hose. Remove the two bolts and raise the bell still attatched to the hose. the thermostat is there with the rubber seal. You can gently pry the thermostat out with a screwdriver or something similar. Put in new thermostat be sure it is the same as the old one, and then replace or change the seal (be sure it is the smae size and thickness as the old one as I got the wrong size from Napa) Then replace the bell, and tighten, but not over tighten. I hope this helps!
SOURCE: where is the thermostat for 4 cyclinder 1999 pontiac grand am
if anything like the 97 model, it's a ***** to change. it's under the engine block where the radiator hose hits the water pump. good luck.
SOURCE: need to replace a thermostat on a pontiac 2002
hi its located directly under the throttel body my tip take the throttel body off this makes it easier getting to the inlet manifold top bolt is ok but the bottom bolt can be hard good luck if you find this imfo useful please rate it thanks
SOURCE: replace a thermostat on a 2002 pontiac grand am 4 cyl
The thermostat will be located where the top radiator hose meets the block. You must disconnect the house and remove the housing that the hose connects to. Should be 2 or 3 bolts.
SOURCE: need to replace thermostat iin 2003 pontiac grand am 3.4
The thermostat is located on the back of the engine under the exhaust crossover, you will have to take some of the small water lines loose to gain access to the bolts and it helps to have a short wobble extension for the ratchet for this. The bottom bolt on the housing doesn't have to come all the way out to get the housing off but I know the top one has to come off. This can be done with the exhaust crossover in place but you will have so much more room if you remove this piece. It is very tight so pay attention pulling it out and reinstalling it to keep from pinching the gasket.
Fig. Thermostat mounting-2.2L engine
Hope helps.
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