BRAKES 1975 SUBURBAN BRAKE SYSTEM USAGE 11 252 VEHICLE SPECIFICATIONS BRAKE SPECIFICATIONS OPTIONALLV AvAiLAsi s J MODEL REAR RPO J55 HD NO W B GVWR WHEELS BASE POWER BRAKES CI0906 IZ9 5 5400 Single JB 3 JB 5 l29 5 6400 Single JB 5 l29 5 6800 Single JB 5 I l29 5 7000 Single JB 5 C20905 l29 5 7100 Single JB 6 JB 7 I29 5 7500 Single IB 7 I29 5 8200 Single IB 7 I 10905 I29 5 6200 Single JB 5 l29 5 6800 Single JB 5 I29 5 7300 Single JB 5 K20905 29 5 6800 Single JB 6 JB 7 129 5 7500 Single JB 7 I 129 5 8400 Single JB 7 Truck has H D Brakes as Std equipment N0 higher brake system available I WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPOFIAT ON LT TRUCI 51 4 000 GROUP 4 1U c REV Z 83