2005 Jeep Grand Cherokee Owner Manual - Page 282

282 STARTING AND OPERATING CAUTION! Damage to the fuel system or emission control system could result from using an improper fuel cap (gas cap). A poorly fitting cap could let impurities into the fuel system. Also, a poorly fitting aftermarket cap can cause the MIL (Malfunction Indicator Light) to illuminate, due to fuel vapors escaping from the system. • Turn the engine off. • Rotate the fuel cap to the left to remove. • To replace the cap, insert it into the filler neck and tighten the cap about 1/4 turn until you hear one click. This is an indication that the cap is properly tightened. • Make sure that the fuel cap tether strap is not caught under the fuel cap. CAUTION! To avoid fuel spillage and overfilling, do not "top off" the fuel tank after filling. NOTE: When the fuel nozzle "clicks" or shuts off, the fuel tank is full. Loose Fuel Filler Cap Message If the vehicle diagnostic system determines that the fuel filler cap is loose, improperly installed, or damaged, a "CHECK GAS CAP" message will be displayed in the EVIC (Electronic Vehicle Information Center). Refer to "Electronic Vehicle Information Center" in Section 4 of this manual. Tighten the fuel filler cap properly and press the odometer reset button to turn the message off. If the problem continues, the message will appear the next time the vehicle is started. Refer to "Onboard Diagnostic System - OBDII" in Section 7 of this manual for more information.