GMC Yukon Denali 2002 Owner's Manual

The recommended oil type for a 2002 GMC Yukon Denali is 5W-30. It's important to use high-quality oil that meets GM standard GM6094M.
To reset the 'Check Engine' light, you can disconnect the battery for about 15 minutes. After reconnecting, the code should clear. However, it's advisable to address any underlying issues first.
The 2002 GMC Yukon Denali has a towing capacity of up to 8,100 pounds when properly equipped.
To improve fuel efficiency, ensure regular maintenance such as timely oil changes, keeping tires properly inflated, and replacing air filters as needed. Avoid excessive idling and aggressive driving.
The recommended tire pressure for the 2002 GMC Yukon Denali is typically 35 PSI for both front and rear tires. Always check the placard inside the driver's door for the most accurate information.
To replace the headlight bulb, open the hood and locate the back of the headlight assembly. Remove the electrical connector and the old bulb, then insert the new bulb and reconnect the electrical connector.
Common transmission issues may include slipping, hard shifts, or delayed engagement. Regular maintenance such as fluid changes can help prevent problems. Consult a professional if you experience any of these issues.
Check the coolant level and look for any leaks. Inspect the radiator and hoses for damage. Ensure the thermostat and water pump are functioning correctly. If problems persist, consult a mechanic.
The fuse box is located under the hood on the driver’s side, near the battery. There is also a secondary fuse box under the dashboard on the driver's side.
Signs of a failing alternator include dimming headlights, electrical issues, a dead battery, and the battery warning light on the dashboard. It's advisable to have the alternator tested if you notice these signs.