have the dealer check the C pillar. There is a known issue with the factory welds and hotter climate usage that causes a tap like that in the roof. roughly here. The solution is to pull the headliner and either tack weld the spot or add...
I think I already added this, but if you have a GX460 and add a cooler, make sure you pin your transmission thermostat. It is under the truck and has a little button you push down and slide a pin into to hold the thermostat open. Why? Because...
Not in the base tune, but optionally there are configs that can disable certain things depending on what is allowed for your year make model. The DOT are watching tunes carefully and there is a fine per instance that an illegal modification is...