diagnostics
know when you're good to go
On the road, it feels great to know your vehicle is running as it should. OnStar Vehicle Diagnostics sends you monthly email reports showing what's going on with your vehicle—in simple language and images. It's all part of your OnStar service, no additional cost.
Vehicle Diagnostics Email
vehicle diagnostics made easy
Easy to read. Easy to use.
Every month, we automatically run hundreds of diagnostic and maintenance checks on your vehicle's key operating systems, including:
Click the items below for more information
Diagnostic Information
This system is responsible for making the power necessary to move the vehicle and sending that power to the wheels.
StabiliTrak® is an advanced computer controlled system that can help the driver maintain directional control of the vehicle in difficult driving conditions.
This system is responsible for monitoring and deployment of the air bag system.
This system is responsible for limiting the emissions from the vehicle, both by keeping fuel and its vapor contained in the fuel system, as well as by limiting exhaust tail pipe emissions by ensuring efficient engine operation.
This system is responsible for monitoring and controlling the antilock brakes, which can reduce stopping distance in slick conditions, and the traction control/stability system, which helps the vehicle maintain control in adverse conditions.
This system is responsible for the operation of your OnStar system.
This includes any routine maintenance determined by several factors such as mileage and oil life.
It's important to keep your vehicle's tires at their recommended PSIs. Properly inflated tires can actually improve fuel economy, vehicle performance and tire life.
On-Demand Diagnostics
what's that noise? why is that light on?
answers are a button push away.
Run a diagnostics check from the road. Just push your blue button and an Advisor will complete a real-time check—and let you know what to do. It's all part of your subscription.
Insurance Discounts
want to lower your insurance costs?
another benefit for OnStar subscribers.
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Click on an insurer for details on discounts and to receive a free no-obligation quote. To make the online quoting process easier, we may pass information such as your discount eligibility code, contact information and Vehicle Identification
Number (VIN).
Low Mileage Discount and Active OnStar Subscriber Discount.
Save up to 54%, depending on your annual mileage—the less you drive the more you can save. Even if you drive more than 15,000 per year, you could still save up to 20% on select coverages.
Click here or call 1-877-836-6738 and mention Preferred Customer Code ON-GT to see how much you could save!
Active OnStar Subscriber Auto Insurance Discount for New Jersey residents.1
Plymouth Rock Assurance, formerly High Point Auto Insurance, offers a special 5% discount off the entire policy to second year or later OnStar subscribers.
Click here or call 1-888-391-7242 to see how much you could save!
Active OnStar Subscriber Discount.
Save up to 10% on auto insurance and 5% on home insurance 1 for being an active OnStar subscriber. Plus additional auto insurance savings for having OnStar as an anti-theft device.
Click here or call 1-888-323-9065 to see how much you could save!
State Farm® Drive Safe & Save™ program for active OnStar subscribers.
Save up to 45% on your auto insurance. The Drive Safe & Save program savings will be based on the number of miles your vehicle is driven. The less you drive, the more you save!
Click here or call 1-866-583-9457 for availability in your state.
Active OnStar Subscribers Discount.
Save up to 12.1% on auto and up to 10% on home insurance with 21st Century Insurance3 and get the same great coverage for less.
Click here or call 877-443-0498 and learn how you could save hundreds on your car or home insurance with 21st Century.
Have questions? Get support .
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