1995 GMC Sonoma Owner's Manual - Page 289

Maintenance Schedule Section IMPORTANT: KEEP ENGINE OIL AT THE PROPER LEVEL AND 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. Introduction Your Vehicle and the Environment Proper vehicle maintenance not only helps to keep your vehicle in 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 0.f 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