Thermostat replacement: 45 – 60 minutes ($30 / 150 / $175)
NOTE: The jiggle/bleeder pin should be at the 12 O’clock position when installing the thermostat.
In this video I helped a friend replace the thermostat in their 2001 Lexus LS430. I is pretty easy, however, the dealership had a problem getting the correct thermostat. So, it may be better if you pull the old one before picking up the new one to insure you get the correct part. My GUESS is that the GS and LS take different size thermostats. This process should be the same from 2000 through 2006.
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