On ICE cars, parts of the cooling system like water pump etc. are covered under powertrain warranty.. My line of thought is that the AC is part of the cooling system just like the water pump on ice.. Without HVAC, battery will overheat and go bad just like if the water pump goes bad on ICE..
Chevy doesn't call that a Powertrain Warranty tho, they called it a "Voltec Warranty", probably so they could define what is considered a Voltec component. And CARB warranty typically only covered emissions related equipment.
The GM Voltec warranty was specific to selected electric drive components including the Volt's battery pack, electric motors and some but not all of the high voltage electronics. The on-board charger was covered as part of Voltec but some wire harnesses were not covered under Voltec. The GM EVSE was originally covered under Voltec GM later detemined that this was a mistake in how the EVSE was coded in the GM database, then the EVSE was no longer covered under Voltec. The Powertrain warranty included the gas engine, things like the front axles, wheel bearings.
We are talking about what Tesla covers which spell out by Tesla and not by owners.
That's an owner's interpretation of what Tesla should cover, not what Tesla writes down of what it covers "Battery and Drive Unit Limited Warranty": No water pump, no AC, no HVAC, just battery and drive unit, not things that are attached to them.
The debate originally stemmed from the assumption that it was actually called a Powertrain Warranty... There is already an industry norm of what a Powertrain is defined as, and what it comprises. (Yes I actually read the legal jargon because I work with lawyers everyday, so it's part of who I am, lol).
