Founded in 1996, OnStar emerges as a result of the collaboration made between three companies, who had given a thought to provide some kind of incredible innovation to the auto world. With a view to make traveling by car safer, the company comes up with the analog operated vehicle systems, which provide complete information about driving the car, safely. With a single OnStar login, customers can enjoy an easy and fast connectivity with the customer service department, to make their driving smooth and comfortable.

OnStar customer service is directed towards driving the vehicle in the most comfortable manner, providing the driver, with complete security features and handy device to handle control over the vehicle. When you’re on the go, you may find the best support system by the premier car safety company in the world.

Just one button and we’re there to help you

OnStar customer service phone number is available 24 hours 7 days a week. The company had provided the handy devices which are successfully integrated into the cars to guide the drivers with the navigation aids, hands-free calling and other similar features. While on the go, you can call at 1.888.4ONSTAR (1.888.466.7827) and ask the dedicated customer support staff and explore the incredible features of the device.

Want to know more? Just push the button

The handy device accustomed in your car is directed to make your drive comfortable and secure. The OnStar phone number will take you to the customer support department that will help you in setting up the mobile app and handling the exclusive features of the app.

Phone1.888.4ONSTAR (1.888.466.7827)
TTY for Hearing/Speech Impaired1.877.248.2080
MailOnStar Member Services
PO Box 1027 Warren, MI 48090-1027
PaymentsDept #77246
OnStar Service Plan Center
PO Box 77000 Detroit, MI 48277-0246
Rating: 3

Write a review

18 Reviews

  1. -

    I really appreciate the level of customer service they provide but it was not easy to find the OnStar phone number. I spend about 10 minutes looking for it on their website and could not find it anywhere. Then I called up my friend and he was able to provide me the number as he is an OnStar customer as well

    Rating: 3
  2. -

    I was locked out and I called the onstar customer service number, they were very quick and responsive. Thank you onstar for the excellent service.

    Rating: 5
  3. -

    I was in a hurry and forgot my car keys and my bag in my car. Stuck outside a very hot and busy afternoon, when I open the Onstar app to get the onstar customer service phone number, the app would not open and was stuck in a blank white screen. I had many other similar issues in the past but onstar did not do anything. I am not happy with the services

    Rating: 3
  4. -
    Jay Juiiano / Ken Spreng

    Never thought we needed on star because we have phones . This is not true. We were in a fatal car accident and on star took care of us immediatly and took care of all of our needs at the time of the crash. great service and great job.The service was unbelievably .
    Thank you
    Jay & Ken

    Rating: 5
  5. -

    I had a recent car trouble and the onstar customer service was not reachable. The lines were busy. How can you call this service when i am paying so much for the service and they are not available when i need help

    Rating: 2
  6. -
    R. A. Bickers

    Please cancel my Onstar Account # 012-258-1781 as I no longer own the 2009 Chev Impala.
    I am not able to phone as I am not living in Canada any more.
    Many thanks.
    Robyn Bickers

  7. -
    Diane Adams

    I live in Alabama and took a trip to Va and I used OnStar to navigate my destination. I got to Va but the navigation took me to the incorrect address. I ended up pulling over and using my gps. This was very disappointing and I hope this doesn’t happen the next trip.

    Rating: 3
  8. -

    I have been trying to cancel my account but i am not able to reach the onstar customer service for the past two days

    Rating: 4
  9. -
    Marie L Merchant

    I do not like your phone system the automated system is horrible and there is no option to click on for customer service !
    Also your smart phone app is not very good either can’t delete my own vehicles when I change vehicles and all so I have to give out my private personal pan to stranger over the phone that I do not even know in order for them to access my account and delete the vehicle I no longer have and on top of that she put me on hold and I hear this thank you thank you thank you message for Tegan choosing on star but then I hear horrible beeping noise no music !! You need to make some changes with your automated phone system and also with the online app I should be able to delete my own vehicles with using my private pin number I gave my name and my phone number and everything but my address and my birthday and my so security number and still she need my pin number to get into my account I don’t think that should be down that way I should be able to delete my own cars off the account I should not have to call-in !!! And when Facebook messaging you or emailing you you never get back to you only say please call our service center for on star in the email that’s all you say ! You need to be more customer friendly and more customer accessible through your app and over the phone otherwise people I’m gonna be happy I just be a customer service rep I know what it’s like when you cannot get through to somebody when the customer struggling to get help and nobody on the other end knows what they’re doing and they don’t care and you can’t be that way as a wrap as a customer service rep if you know your job you have to do your job and also you need to have a better friendly app online in your phone service prompts have to be better for customers just call yourself and listen to your app options on the phone ! you will see that it is horribly terribly not a good function at all it is no customer service press zero or 4 pound or nothing change it in change your app so that customers can delete their own vehicles off of their own account thank you for letting me vent !

  10. -
    Jerry Pruett

    I was told I would be sent an e-mail to read and agree to the contract rules before the trial could start. I have not received the e-mail. I think that the on star person may not have got my e-mail correct. So I am sending this message to make sure on star has it.

  11. -

    Onstar took $700 or of my checking acct without authorization after I have them my credit card info for a trial period. Even though the money was put back into my acct Tyne next day, I was unaware of this procedure, and couldn’t use my debit card for 2 days because they caused all kinds of hardship. Can’t counteract this morning by phone because the only number they provide is not working. My fuel light was on and I couldn’t even get fuel to get home and I had 2 kids with me 50 miles from home. Not happy at all!

  12. -
    Saul Saumell

    Cancelled my service AGAIN June 18, 2018 and I got charged AGAIN for the service. I do not own the GMC Acadia since September 2017, but I have been charged for the last 10 months!!

  13. -
    Sharon Gingras

    Want to use new credit card for our automatic on- star payment but no phone number to be found.

  14. -
    nathan harris

    need to advise new credit card for you to continue making payments

  15. -
    Ann Bishop

    Reactivate car phone

  16. -
    Don Walker

    On Star offered me a trail service, from the time I started with on Star nothing but trouble, employees that give false information go back on services promised. Being in and have two sons in Law Enforcement I would not recommend On Star to anyone. Very disappointed with customer service, if not for that the service could be a valueable tool. Can’t trust On Star to stand behind any thing they say.

    Rating: 1
  17. -
    joan hart

    My husband and I were in an accident last night. We are both okay. I would just like to thank Onstar and the immediate response to our accident. within seconds the car was stopped flashes initiated and someone came on the line to ask if we were okay. Did we need ambulance, fire, sheriff. The called the sheriff’s department for us and patched us through. She stayed on the line with us until officers responded. Well worth the fee. Thank you so much

    Rating: 5
  18. -

    The app crashed and i am unable to log in to my account. i need assistance