1995 GMC Yukon Owner's Manual - Page 369

Scheduled Maintenance Services Section KEEP ENGINE OIL AT THE PROPER LEVELAND CHANGE AS RECOMMENDED This section covers the maintenance required for your vehicle. Your vehicle needs these services to retain its safety, dependability and emission control performance. I Introduction protection Plan I Your Vehicle and ihe Environmeni Proper vehicle maintenance not only helps to keep your vehicle i n good working condition, but also helps the environment. All recommended maintenance procedures are important. Improper vehicle maintenance or the removal of important components can significantly affect the quality of the air we breathe. Improper fluid levels or even the wrong tire inflation can increase the level of emissions from your vehicle. To help protect our environment, and to help keep your vehicle in good condition, please maintain your vehicle properly. 7- 1