Question about 2004 Pontiac Grand Am
You will need to drain the antifreeze, remove the radiator hose that mounts to the housing at the top of the engine block. Remove with a plastic scraper any remains of the old gasket, dry the area well and replace the thermostat and gasket in the same position that the old one was sitting in. (Notice which way the spring is sitting.)
Do not over-tighten the bolts that hold the housing down since the housing is pot metal that will crack if overstressed - notice how much effort it took to get them loose. Replace the hose, refill the antifreeze and you're done. If you can afford it, replace the hoses while you are at it if they are more than 3 -4 years old. Let the car idle until it gets to normal operating temp and check for any leaks.
Posted on May 30, 2010
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Posted on Jan 02, 2017
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Jun 24, 2014 | 2004 Pontiac Grand Prix
Dec 26, 2013 | 2000 Pontiac Grand Am GT
For thermostat replacement step by step instructions with pics-
The pics as shown are for a GP model, but the GTP shares the same block so the thermostat is in the same place.
Your model year may require a gasket instead of an optional "o" ring. Buy one before you start and when you pull it apart, see if it has a gasket. -If so replace it, if not return the unused part.
Hope this helps. "G"
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