How to Replace thermostat on 98 Oldsmobile silhouette?

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I had to replace my thermostat. I moved the throttle head out of the way. I removed the air cleaner assy. I then removed the two bolts from the housing area and pulled out the thermostat. The tools I used were the 10mm/ 13mm/ flathead screw driver to remove air cleaner, and I also loosened four bolts on the aluminum covering below the throttle head. It took some time ( 2 hours) and patience. It helps if the vehicle is on ramps lifting up the front end of the vehicle. Thats how I did it.
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