Flat towing requires a number of components that are detailed in the linked article. These major items include base plates, safety cables, tow bar, a wiring/lighting kit and braking system.
For the 2002 Sonoma 4x4 (excluding the ZR2 Highrider) we do have base plate fits including the Roadmaster # 179-2 which has removable arms. For a compatible tow bar we offer the Falcon 2 model # RM-520 and for safety cables you can use # RM-643. For a universal diode wiring kit you can use # RM-15267... view full answer...
The Reese tow bar 74943 is now an obsolete tow bar so I cannot say if it is a direct fit or if an adapter will allow it to be used with the Roadmaster base plates. There is an adapter for similar tow bars, # RM-025, but we have it listed as fitting specific tow bars (Draw-Tite (2480), Reese (74950), Valley, EAZ-Lift and Tow Ready (63180)).
The best and safest option is to match the base plates and tow bar. Base plates # 161-1 are designed for the 2002 GMC Sonoma, 2-wheel drive, ZR2 and... view full answer...