1998 GMC Envoy Owner's Manual - Page 313

I Introduction IMPORTANT: Your Vehicle and the Environment Proper vehicle maintenance not only helps to keep your vehicle i n good working condition, but also helps the environment. All recornmended maintenance procedures are inymrtant. Improper vehicle maintenance can even affect the quality o f the air we breathe. Improper fluid levels or the wrong tire inflation can increase the level of emissions fro111 your vehicle. To help protect O L I ~ environment. and to keep your vehicle in good condition, please maintain your vehicle properly. I KEEP ENGINE OIL AT THE PROPER LEVEL AND CHANGE AS RECOMMENDED Protection Plan How This Section is Organized The remainder of this section is divided into five parts: "Part A: Scheduled Maintenance Services" shows what to have done and how often. Some of these services can be complex, so unless you are technically qualified and have the necessary equipment, you should let your dealer's service department or another qualified service center do these jobs. 7-2