2003 Pontiac Montana Owner's Manual - Page 320
2003 Pontiac Montana Manual
Page 320 highlights
Maintenance When Trailer Towing Your vehicle will need service more often when you're pulling a trailer. See the Maintenance Schedule for more on this.Things that are especially important in trailer operation are automatic transaxle fluid (don't overfill), engine oil, belts, cooling system and brake system. Each of these is covered in this manual, and the Index will help you find them quickly. If you're trailering, it's a good idea to review these sections before you start your trip. Check periodically to see that all hitch nuts and bolts are tight. Trailer Wiring Harness Your vehicle has a trailer wiring harness located at the rear of your vehicle. To use the trailer wiring harness you need a converter kit. Contact your dealer for more information. 4-43
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