Question about 2003 Pontiac Grand Am

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Hello if you have a 3.4 v6 engine, it is mounted on the driver side of engine. it is just under the throttle body.

Posted on Dec 18, 2011

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This was not an easy fix! The thermostat is directly under the throttle body and the exhaust shroud runs parallel in front of it. I took off the air filter and box, removed the bolts from exhaust shroud to get enough wiggle room to get my hands in there, and still had to bend my hand upside down to make the angle to get the bolts out; was about a 4 hour job all in all due to all the things that I had to remove. The thermostat bolts are 13 mm and the rear bolt is a SPLIT hole (wish I would have known this tip at the beginning!) you will need a 13mm crows foot or bendable slim ratchet to get to these bolts. This is the 2nd WORST thermostat placement that I've ever seen.

2003 PONTIAC GRAND AM THERMOSTAT LOCATION DIAGRAM - da735943-4dd5-426e-9d49-c5d3b8a3ef30.jpeg

Posted on Jan 28, 2018


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Posted on Jan 02, 2017

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SOURCE: thermostat location

On a GM six clinder it is in the housing that the upper radiator hose is hooked on the upper intake. It is very difficult to remove with the exhaust cross over pipe in the way but is possible with some time.

Posted on Dec 23, 2008

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SOURCE: location of thermostat for a 2004 pontiac grand am.

follow the upper rad. hose from the rad. to the other end. It should be under the throttle body. I'm a certified Master Tec and these are not easy to do.

Posted on Dec 23, 2008

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SOURCE: Where is the thermostat located on a 2003 pontiac aztec?

grab hold of the upper radiator hose, and follow it back to the engine block. The housing the hose is attatched is where the thermostat is hiding :)

Posted on Jan 14, 2009

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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.

Posted on Feb 26, 2009

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SOURCE: fuel filter location

The fuel filter is mounted on the floor pan just in front of the fuel tank

Posted on Mar 22, 2009

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