AT&SF GP20 Locos:
This page is dedicated to AT&SF's fleet of GP20 units. The AT&SF was the original owner of 75 GP20 units. It appears that all units were renumbered to the AT&SF 31xx series around 1969-1970 in the general system renumbering and then all units were rebuilt during the late 1970s into the early 1980s as model GP20u. Throughout both renumberings each unit retained its last two digits.
AT&SF:
Original orders:
| Orig. road numbers | EMD serial no. | build date | notes |
| AT&SF 1100-1124 | 25573-25597 | 5-7/1960 | |
| AT&SF 1125-1174 | 26831-26880 | 8-12/1961 |
GP20: AT&SF 1100 25573 5/1960 to AT&SF 3100 to AT&SF 3000 to PREX 3000 AT&SF 1101 25574 5/1960 to AT&SF 3101 to AT&SF 3001 to BNSF 2001 to PREX 3001 AT&SF 1102 25575 5/1960 to AT&SF 3102 to AT&SF 3002 to BNSF 2002 to PREX 2002 AT&SF 1103 25576 5/1960 to AT&SF 3103 to AT&SF 3003 to TP&W 2003 AT&SF 1104 25577 5/1960 to AT&SF 3104 to AT&SF 3004 to TP&W 2005 AT&SF 1105 25578 5/1960 to AT&SF 3105 to AT&SF 3005 to BNSF 2003 AT&SF 1106 25579 5/1960 to AT&SF 3106 to AT&SF 3006 to CNZR 3006 AT&SF 1107 25580 5/1960 to AT&SF 3107 to AT&SF 3007 to BNSF 2005 AT&SF 1108 25581 5/1960 to AT&SF 3108 to AT&SF 3008 to BNSF 2006 AT&SF 1109 25582 5/1960 to AT&SF 3109 to AT&SF 3009 AT&SF 1110 25583 5/1960 to AT&SF 3110 to AT&SF 3010 to BNSF 2008 AT&SF 1111 25584 5/1960 to AT&SF 3111 to AT&SF 3011 wrecked Augusta, KS 10/26/1981 to AT&SF 109 (slug) to AT&SF 1109 AT&SF 1112 25585 5/1960 to AT&SF 3112 to AT&SF 3012 AT&SF 1113 25586 5/1960 to AT&SF 3113 to AT&SF 3013 to TP&W 2016 AT&SF 1114 25587 6/1960 to AT&SF 3114 to AT&SF 3014 to TP&W 2009 to TP&W 2058 AT&SF 1115 25588 6/1960 to AT&SF 3115 to AT&SF 3015 to TP&W 2015 AT&SF 1116 25589 6/1960 to AT&SF 3116 to AT&SF 3016 to TP&W 2007 to TP&W 2060 AT&SF 1117 25590 7/1960 to AT&SF 3117 to AT&SF 3017 to BNSF 2010 to PREX 2010 AT&SF 1118 25591 7/1960 to AT&SF 3118 to AT&SF 3018 to BNSF 2011 AT&SF 1119 25592 7/1960 to AT&SF 3119 to AT&SF 3019 to TP&W 2012 to TP&W 2050 AT&SF 1120 25593 7/1960 to AT&SF 3120 to AT&SF 3020 to BNSF 2012 AT&SF 1121 25594 7/1960 to AT&SF 3121 to AT&SF 3021 to BNSF 2013 to PREX 2013 AT&SF 1122 25595 7/1960 to AT&SF 3122 to AT&SF 3022 to TP&W 2014 AT&SF 1123 25596 7/1960 to AT&SF 3123 to AT&SF 3023 to PREX 3023 AT&SF 1124 25597 7/1960 to AT&SF 3124 to AT&SF 3024 to BNSF 2015 AT&SF 1125 26831 8/1961 to AT&SF 3125 to AT&SF 3025 to BNSF 2016 AT&SF 1126 26832 8/1961 to AT&SF 3126 to AT&SF 3026 to BNSF 2017 to PREX 2017 AT&SF 1127 26833 8/1961 to AT&SF 3127 to AT&SF 3027 wrecked Abilene, KS 01/13/1985 scrapped on site AT&SF 1128 26834 8/1961 to AT&SF 3128 to AT&SF 3028 to BNSF 2018 to PREX 2018 AT&SF 1129 26835 8/1961 to AT&SF 3129 to AT&SF 3029 to BNSF 2019 AT&SF 1130 26836 8/1961 to AT&SF 3130 to AT&SF 3030 to SERA 50 AT&SF 1131 26837 8/1961 to AT&SF 3131 to AT&SF 3031 AT&SF 1132 26838 8/1961 to AT&SF 3132 to AT&SF 3032 to PREX 3032 AT&SF 1133 26839 9/1961 to AT&SF 3133 to AT&SF 3033 to FWRY 3033 to NENE 3033 AT&SF 1134 26840 9/1961 to AT&SF 3134 to AT&SF 3034 to TP&W 2018 AT&SF 1135 26841 9/1961 to AT&SF 3135 to AT&SF 3035 to BNSF 2024 to PREX 2024 AT&SF 1136 26842 9/1961 to AT&SF 3136 to AT&SF 3036 to BNSF 2025 AT&SF 1137 26843 9/1961 to AT&SF 3137 to AT&SF 3037 wrecked Abilene, KS 01/13/1985 scrapped on site AT&SF 1138 26844 9/1961 to AT&SF 3138 to AT&SF 3038 to BNSF 2026 to PREX 2026 AT&SF 1139 26845 9/1961 to AT&SF 3139 to AT&SF 3039 to TP&W 2002 AT&SF 1140 26846 9/1961 to AT&SF 3140 to AT&SF 3040 to TP&W 2010 to TP&W 2062 to NYSW 2062 AT&SF 1141 26847 9/1961 to AT&SF 3141 to AT&SF 3041 to TP&W 20** to TP&W 2056 AT&SF 1142 26848 x/1961 to AT&SF 3142 to AT&SF 3042 wrecked Alvarado, TX 10/24/1984 AT&SF 1143 26849 10/1961 to AT&SF 3143 to AT&SF 3043 to DMVW 3043 AT&SF 1144 26850 10/1961 to AT&SF 3144 to AT&SF 3044 to BNSF 2029 to PREX 2029 AT&SF 1145 26851 10/1961 to AT&SF 3145 to AT&SF 3045 to FWRY 3045 to NENE 3045 AT&SF 1146 26852 10/1961 to AT&SF 3146 to AT&SF 3046 AT&SF 1147 26853 10/1961 to AT&SF 3147 to AT&SF 3047 to BNSF 2032 AT&SF 1148 26854 10/1961 to AT&SF 3148 to AT&SF 3048 to PREX 3048 AT&SF 1149 26855 10/1961 to AT&SF 3149 to AT&SF 3049 to BNSF 2034 AT&SF 1150 26856 10/1961 to AT&SF 3150 to AT&SF 3050 to BNSF 2035 AT&SF 1151 26857 10/1961 to AT&SF 3151 to AT&SF 3051 to TP&W 2008 to TP&W 2066 to NYSW 2066 AT&SF 1152 26858 10/1961 to AT&SF 3152 to AT&SF 3052 to BNSF 2036 AT&SF 1153 26859 11/1961 to AT&SF 3153 to AT&SF 3053 to TP&W 2011 AT&SF 1154 26860 11/1961 to AT&SF 3154 to AT&SF 3054 to ASRY 3054 AT&SF 1155 26861 11/1961 to AT&SF 3155 to AT&SF 3055 to BNSF 2038 to PREX 2038 to MWLX 2038 AT&SF 1156 26862 11/1961 to AT&SF 3156 to AT&SF 3056 to BNSF 2039 AT&SF 1157 26863 11/1961 to AT&SF 3157 to AT&SF 3057 to BNSF 2040 to PREX 2040 AT&SF 1158 26864 11/1961 to AT&SF 3158 to AT&SF 3058 to BNSF 2041 to PREX 2041 AT&SF 1159 26865 11/1961 to AT&SF 3159 to AT&SF 3059 to TP&W 2017 AT&SF 1160 26866 11/1961 to AT&SF 3160 to AT&SF 3060 wrecked Beckville, TX 08/04/1998 AT&SF 1161 26867 11/1961 to AT&SF 3161 to AT&SF 3061 to BNSF 2043 AT&SF 1162 26868 11/1961 to AT&SF 3162 to AT&SF 3062 AT&SF 1163 26869 11/1961 to AT&SF 3163 to AT&SF 3063 to TP&W 2019 to SDIV 2019 AT&SF 1164 26870 12/1961 to AT&SF 3164 to AT&SF 3064 to BNSF 2045 to PREX 2045 AT&SF 1165 26871 12/1961 to AT&SF 3165 to AT&SF 3065 to BNSF 2046 to DMVW 2046 AT&SF 1166 26872 12/1961 to AT&SF 3166 to AT&SF 3066 to BNSF 2047 to PREX 2047 AT&SF 1167 26873 12/1961 to AT&SF 3167 to AT&SF 3067 to BNSF 2031 to PREX 2031 AT&SF 1168 26874 12/1961 to AT&SF 3168 to AT&SF 3068 to TP&W 2013 AT&SF 1169 26875 12/1961 to AT&SF 3169 to AT&SF 3069 to PREX 3069 AT&SF 1170 26876 12/1961 to AT&SF 3170 to AT&SF 3070 to BNSF 2049 to DMVW ???? AT&SF 1171 26877 12/1961 to AT&SF 3171 to AT&SF 3071 to TP&W 2004 to TP&W 2056 AT&SF 1172 26878 12/1961 to AT&SF 3172 to AT&SF 3072 to BNSF 2050 to PREX 2050 AT&SF 1173 26879 12/1961 to AT&SF 3173 to AT&SF 3073 to TP&W 2050 AT&SF 1174 26880 12/1961 to AT&SF 3174 to AT&SF 3074 to TP&W 2001