Frequently Asked Questions: Maintenance & Repair

  • Q: How do I schedule a service appointment with a dealer? 
  • A: There are several easy and convenient ways to schedule a service appointment with a GM dealership.  GM Dealerships will accept an appointment over the telephone, through their dealership website, or their dealership mobile site.  Additionally, GM offers customers the ability to find a GM dealership and schedule an appointment through any of the brand sites Chevrolet, Buick, GMC or Cadillac or through the Certified Service site.
  • Q: What makes Certified Service technicians different?
  • A: From changing oil to replacing engines to onboard vehicle diagnostics, these automotive experts, nationwide, are trained by GM to care for your vehicle’s specific needs, undergoing more than one million hours of instruction annually. They use the most advanced diagnostic equipment available. Genuine GM Parts are tested for performance and reliability – so no matter what kind of GM vehicle you own, trust it to the Certified Service technicians at your GM dealer.
  • Q: How do I obtain an Owner's Manual?
  • A: 1. You can register your vehicle by visiting the GM Owner Center to download an electronic copy (for many vehicles from 1993 to present).  Or you can visit the Certified Service site for an electronic copy (depending upon vehicle brand and model year) or to order a printed copy.   2. To receive a paper copy (for a fee) you may contact Helm, Inc. Manuals are available for most GM vehicles. You can reach Helm Publications Ordering at 1-800-551-4123.
  • Q: What is the Oil Life Monitoring System?
  • A: The GM Oil Life System is a computer-based software algorithm that determines when to change oil based on engine operating conditions. The computer continuously monitors engine-operating conditions to determine when to change oil.
  • Q: What type of oil should I use in my GM vehicle?
  • A: You can find this answer by looking in your Owner's Manual under "Oil, Engine." If you do not have a manual, and you currently own a GM vehicle, please visit the GM Owner Center to download a complimentary electronic copy (for most vehicles from 1993 to present), or the Certified Service site to order a printed copy.