Estime for heater core replace--how many hours? on 2000 Chevrolet Astro


For any estimate can you provide the number of manhours used to provide the labor estimate?

1 answer
For the main heater my book shows 3.2 hours but does not include AC system recharge as for the auxiliary heater core (in the back on some models) the time is 1 hour and also does not include AC system recharge