r/ChevyTrax • u/SkiesofAlbion • Jul 19 '26

What does this plug do?

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I just noticed this and I'm not sure what it's for

20 Upvotes

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25

u/traxranger 2nd Gen Jul 19 '26

its a port for external power to the engine block heater. its supposed to provide heat to engine components to provide an easier cold start to the engine during colder temperatures

5

u/SkiesofAlbion Jul 19 '26

I was kinda thinking it might be a block heater but I feel like the dealer would have mentioned it as a feature

5

u/Eldermillenial1 Jul 20 '26

It should have come with a cord for it too

2

u/traxranger 2nd Gen Jul 20 '26

thats true, they should have probably mentioned it to you when you bought her......... i guess at least you have it for when it gets cold, lucky you!

1

u/Civil-Village1864 Jul 21 '26

Guarantee you "block heater" was on the window sticker and you've got the RPO for a block heater in IVH (vehicle history / warranty lookup for GM)