w/o DSTC - Brake Control Has provisions for 2-brake lines. DSTC = Dynamic Stability Traction Control - w/o DSTC - DSTC = Dynamic Stability Traction Control - W/o DSTC Brake Control Has provisions for 2-brake lines. - w/o DSTC - Factory Code #1 CH 68133- : Factory Code #2 CH 66230- DSTC = Dynamic Stability Traction Control If "Factory Code" is needed, you must look at the Vin or Product/ ID Plate number, when using the Vin number,looking from left to right, this code is in the 11th position (following the Model Year), when using the Product/ ID Plate, looking from left to right on the 1st line, this code is in the 5th position. - w/o DSTC - Factory Code #1 CH 68133- : Factory Code #2 CH 66230- DSTC = Dynamic Stability Traction Control If "Factory Code" is needed, you must look at the Vin or Product/ ID Plate number, when using the Vin number,looking from left to right, this code is in the 11th position (following the Model Year), when using the Product/ ID Plate, looking from left to right on the 1st line, this code is in the 5th position. W/o DSTC Brake Control Has provisions for 2-brake lines. - w/o DSTC Brake Control Has provisions for 2-brake lines. DSTC = Dynamic Stability Traction Control If "Factory Code" is needed, you must look at the Vin or Product/ ID Plate number, when using the Vin number,looking from left to right, this code is in the 11th position (following the Model Year), when using the Product/ ID Plate, looking from left to right on the 1st line, this code is in the 5th position. -