# Car check engine light

**URL:** <https://community.cartalk.com/t/car-check-engine-light/197441>\
**Category:** General Discussion\
**Created:** [September 30, 2024, 9:33pm UTC](https://community.cartalk.com/t/car-check-engine-light/197441 "2024-09-30T21:33:41Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\
**Post date:** [September 30, 2024, 9:33pm UTC](https://community.cartalk.com/t/car-check-engine-light/197441/1 "2024-09-30T21:33:41Z")

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Took it in to the dealer, 2017 Acadia limited. AutoZone called it failed pressure test on emission test, not a gas cap, take it to the dealer. So I did. $200 diagnosis fee, whatever fix it. They called back today and said we got it in, I asked does the diagnostic fee get applied to repair? They said there will be no charges for diagnostic fee or repair. Crazy world!

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [September 30, 2024, 9:43pm UTC](https://community.cartalk.com/t/car-check-engine-light/197441/2 "2024-09-30T21:43:31Z")

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N/C? Good for your shop. I hope you reward them by giving them more business in the future. There’s supposedly a near-by comet flying around in the sky, maybe it brought you good luck.

I expect the tech folks discovered that one of the easily accessible evap hoses fell off its fitting, or broke at the fitting. So no need for a replacement part.

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**Author:** ![asemaster](https://avatars.discourse-cdn.com/v4/letter/a/5f9b8f/32.png) [@asemaster](https://community.cartalk.com/u/asemaster)\
**Post date:** [October 1, 2024, 3:25am UTC](https://community.cartalk.com/t/car-check-engine-light/197441/3 "2024-10-01T03:25:05Z")

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What exactly was the repair?

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [October 1, 2024, 4:22pm UTC](https://community.cartalk.com/t/car-check-engine-light/197441/4 "2024-10-01T16:22:05Z")

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> [@George\_San\_Jose1](#):
>
> I expect the tech folks discovered that one of the easily accessible evap hoses fell off its fitting, or broke at the fitting.

Either that scenario, or–perhaps–this was covered by a recall.

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**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\
**Post date:** [October 1, 2024, 5:36pm UTC](https://community.cartalk.com/t/car-check-engine-light/197441/5 "2024-10-01T17:36:22Z")

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Evidently not a recall but a high failure rate on the purge pump, Totyally No charge, YAHOO GMC dealer. "A failing evaporative emissions purge pump in a GMC vehicle may be covered by a special coverage program that requires dealers to replace the pump at no cost to the customer. "

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**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\
**Post date:** [October 4, 2024, 3:40am UTC](https://community.cartalk.com/t/car-check-engine-light/197441/6 "2024-10-04T03:40:20Z")

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Moral of the story if your gm vehicle needs a purge pump take it to the dealer to see if there is a free fix.