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So,my 2014 Volt has the relatively common no-heat-in-electric-mode issue. I took it to the dealership, and they said they found no fault codes, and they checked by VIN and it does not need a programming update. They told me that they can't figure out the issue, and they need to call a Volt engineer for help. So, I take it home and take a look myself.
I charge the battery to 100% while the car cools down overnight. Next morning, I drive the front end up on ramps, turn the ignition on, crank the heat up to 'HI' and I crawl under the Volt. Sure enough, it is producing heat under the car, but still blowing cold air in the car. This makes me 95% sure the pump is not working. (The coolant line from the electric heater to the pump is hot, but the exit line out of the pump is cold.)
My dealer wants $650+ to replace. A new pump is only about $200.
Question: Who on this forum has actually performed this pump replacement? What steps and extra parts/fluids do I need? I'm assuming I need to drain the engine coolant first, then replace it after the repair?
Anyone have a repair manual for this?
Here is the part number for the pump currently on my Volt: 13579710
https://www.gmpartsdirect.com/oem-parts/gm-b-pump-13579710
Which has evidently been discontinued and replaced by part number: 13597899
https://www.gmpartsdirect.com/oem-parts/gm-pump-13597899
I charge the battery to 100% while the car cools down overnight. Next morning, I drive the front end up on ramps, turn the ignition on, crank the heat up to 'HI' and I crawl under the Volt. Sure enough, it is producing heat under the car, but still blowing cold air in the car. This makes me 95% sure the pump is not working. (The coolant line from the electric heater to the pump is hot, but the exit line out of the pump is cold.)
My dealer wants $650+ to replace. A new pump is only about $200.
Question: Who on this forum has actually performed this pump replacement? What steps and extra parts/fluids do I need? I'm assuming I need to drain the engine coolant first, then replace it after the repair?
Anyone have a repair manual for this?
Here is the part number for the pump currently on my Volt: 13579710
https://www.gmpartsdirect.com/oem-parts/gm-b-pump-13579710
Which has evidently been discontinued and replaced by part number: 13597899
https://www.gmpartsdirect.com/oem-parts/gm-pump-13597899