2003 GMC Sonoma Owner's Manual - Page 258

Maximum Trailer 4.3L V6/Auto. Trans. 3.42 3.73 5,200 Ibs. (2 361 kg) 5,200 Ibs. (2 361 kg) 9,500 Ibs. (4 309 kg) 9,500 Ibs. (4 309 kg) * If your vehicle is equipped with RPO V4A (XtremeTM Sport Appearance Package), your vehicle was neither intended nor designed to tow a trailer. For more information on RPO codes, see Service Parts Identification Label on page5-94. Maximum trailer weight is calculated assuming only the driver is in the tow vehicle and it has all the required trailering equipment. The weight of additional optional equipment, passengers and cargo in the tow vehicle must be subtracted from the maximum trailer weight. The weight of the trailer tonguealso affects trailering capacity. See "Weight of the Trailer Tongue" next. **The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be exceeded. You can ask your dealer for our trailering information or advice, or you can write us at the address listed in your Warranty and Owner Assistance Information Booklet. In Canada, write to: General Motors of Canada Limited Customer Communication Centre, 163-005 1908 Colonel Sam Drive Oshawa,, Ontario L I H 8P7 4-57