A A SPEEDOMETER GEAR CHARTS E I 1986 SPEED0 GEAR USAGE CHART A C1 2 3 THM 400 CONTINUED A A 5 A R G D A v A P TIRE SIZE A AXLE TRANS E R N LT235 85R16 T 50 16LT i A 7 50 16LTOOR Q H 5 M40 25 Z T NOTE 20 TRANS CODE FJT FPT A A A A H 23 TRANS c0DE r A FB FD FM Fx A 24 TRANS CODE FA FB FD FM FQ FX 4 A A 25 TRANS CODE FJ A 69 TRANS CODE LH LS FB FD F M it 1988 GENERAL MOTORS SERVICE PARTS OPERATIONS LIGHT TRUCKE 52R 4 337 A SPEEDOMETER GEAR 26 REV 1 88