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Linking MyGMC app to Alexa using MyGMC & OnStar

New Contributor

Hi all, I’m trying to start my GMC truck with Alexa which requires you to link MyGMC with Alexa. Every time I attempt this it fails and tells me “The input entered is invalid” Yes the username and password are correct for MyGMC app. Anyone have a fix for this problem?




Hi there. Our team would be happy to look into the setup process between the myGMC app and Alexa further with you. To get started, please send us an email to with "ATTN: OnStar Community/PT" in the subject line. We'll keep an eye out for your message.

New Contributor

I am having this same issue with my 2019 Acadia and my wife's 2018 Equinox.

Please help!

Please ensure that you have completed the Initial Set-Up for your Alexa skill, In-Vehicle App, or Google Voice assistance and linked your OnStar account/vehicle in the Alexa app or Google Home. If you've completed these initial steps and are still experiencing trouble, please send us an email to with "ATTN: OnStar Community/Hackbas" in the subject line so we may further assist. Our team will look forward to your message. 

New Contributor

I am having a similar issue. My vehicle use to be connected to Alexa and now it says I have no vehicles connected. when I try to connect the vehicle this is the message I get  

502 Bad Gateway


Thanks for bringing this error message to our attention. Our team would like to look into things further with you and see what troubleshooting we can provide. To get started, please send us an email with these details to and "ATTN: OnStar Community/jlyle7b" in the subject line.