11 days after Sierra Shell mechanics repaired my trucks AC system, truck displays warning symbols on dash and suddenly looses all power. My neighbor looked at battery and adds water to 2 dried cells. Then I get a jump start. Engine starts and then stops a minute later. Have truck towed back to same shop. They say it's a bad alternator. Shouldn't they have checked the Volts in alternator before repairing and installing compressor, etc?

11 days after Sierra Shell mechanics repaired my trucks AC system, truck displays warning symbols on dash and suddenly loses all power. My neighbor looked at battery and adds water to 2 dried cells. Then I get a jump start. Engine starts and then stops a minute later. Have truck towed back to same shop. They say it's a bad alternator. Shouldn't they have checked the Volts in alternator before repairing and installing compressor, etc?