2003 GMC Sonoma Trailer Hitch
The hitch that fits, the harness that plugs in, shipped free anywhere in Canada
Every part below is matched to the 2003 GMC Sonoma, priced in Canadian dollars, and on its way to your door with no shipping charge.
CURT parts for the 2003 GMC Sonoma
CURT 13021 CLASS 3 HITCH 82-04 S10/S15/ 91-04 SONOMA CURT 13021
$471.06
1982-2004 Chevrolet S10 / 1982-1990 GMC S15 + Class 3 Trailer Hitch CURT 13132
$325.15
1982-2004 Chevrolet S10 / 1982-1990 GMC S15 + Receiver Hitch CURT 13920
$525.62
CURT 55359 WIRE HARNESS 98-04 S10/ CURT 55359
$47.40Your 2003 GMC Sonoma has three CURT hitches to choose from, and the right one comes down to what you're pulling and what you'll hang off the receiver. CURT 13021 is a Class 3 hitch with a 2-inch receiver, rated to 4,000 lb gross trailer weight and 400 lb tongue weight, $471.06 CAD. Every one ships free anywhere in Canada.
- CURT 13132 is a Class 3 hitch with a 2-inch receiver, rated to 4,000 lb gross trailer weight and 400 lb tongue weight, $325.15 CAD.
- CURT 13920 is a Class 3 hitch with a 2-inch receiver, rated to 3,500 lb gross trailer weight and 350 lb tongue weight, $525.62 CAD.
Trailer lights are a plug-in job on this one. CURT 55359 is the four-flat plug harness for the 2003 GMC Sonoma, $47.40 CAD, and it clicks into the factory connector so you're not splicing wires behind the bumper.
What you need to tow with a 2003 GMC Sonoma
A bike rack only needs the hitch. A trailer needs all three, and every piece ships free anywhere in Canada.
- CURT 13021 hitch, $471.06 CAD. The receiver that bolts to the Sonoma.
- CURT 55359 wiring harness, $47.40 CAD. Plugs in, no splicing; the trailer lights follow the Sonoma's.
- CURT 45836 ball mount, $41.70 CAD. Ball mount with the ball already on it, ready to hook a trailer. Bigger coupler? CURT 45041 carries a 2-5/16-inch ball, $62.42 CAD.
More GMC Sonoma hitch years
2003 GMC Sonoma hitch questions
Which trailer hitch fits a 2003 GMC Sonoma?
CURT 13021 (Class 3, 2-inch receiver, 4,000 lb), CURT 13132 (Class 3, 2-inch receiver, 4,000 lb), and CURT 13920 (Class 3, 2-inch receiver, 3,500 lb) all fit. Pick the class that covers your trailer with room to spare, then check the fit table on the product page for your build.
How much can a 2003 GMC Sonoma tow with this hitch?
The hitch is rated to 4,000 lb gross trailer weight and 400 lb tongue weight, or 6,000 lb with a weight-distribution hitch. Your Sonoma has its own tow rating in the owner's manual, and the lower number is your limit. A loaded bike rack counts against tongue weight too.
Do I need a wiring harness for the 2003 GMC Sonoma?
If a trailer is going on, yes. Brake and turn signals have to work, and CURT 55359 plugs into the factory connector so the trailer lights follow the Sonoma's. Order it with the hitch and it's one install.
