ARZC 2001
| Ex-UP 700, SECX 2001 |
GP20
| 26045 | 1 | 101952 |
ARZC 2002
| Ex-UP 718, SECX 2002 |
GP20
| 26063 | 1 | 101951 |
ATSF 3126
| 1126 > 3126 > 3026 > BNSF 2017 |
GP20
| 26832 | 1 | 255087 |
ATSF 3134
| New as 1134, later 3134 |
GP20
| 26840 | 1 | 267498 |
ATSF 3153
| |
GP20
| 26859 | 1 | 161785 |
AZER 2170
| ex-GN |
GP20
| 25703 | 1 | 39577 |
AZER 2171
| ex-GN |
GP20
| 26291 | 1 | 30248 |
BN 2018
| |
GP20
| 26286 | 1 | 75154 |
BN 2036
| Blt 2/61 as CB&Q 900, Rblt 3/90 to GP20C, Ret. 4/93 |
GP20
| 26571 | 1 | 115467 |
BN 2044
| blt 2/61 as CB&Q 908, retired 09/94 |
GP20
| 26579 | 1 | 44529 |
BN 2053
| ex-CBQ 917, retired 8/86 |
GP20
| 26588 | 1 | 127232 |
BN 2054
| ex-CBQ 918, retired 08/99. Sold to ALAB, to PREX |
GP20
| 26589 | 2 | 179795 |
BN 2058
| blt 4/61 as CB&Q 922, ret 2/97 |
GP20
| 26593 | 1 | 75946 |
CBQ 925
| blt 1961 |
GP20
| 26596 | 1 | 72772 |
GNBC 9057
| ex-GRR |
GP20
| 20033 | 11 | 73389 |
MILW 953
| 17.5-ERS |
GP20
| 23534 | 1 | 74155 |
SERA 50
| Sierra Railway 50, ex AT&SF 1130/3030 |
GP20
| 26836 | 1 | 70162 |
SSW 4036
| |
GP20
| | 1 | 2078139831 |
SWKR 2044
| Ex SP, turbo removed |
GP20
| 27353 | 1 | 60330 |
UP 487
| scrapped 8-85 |
GP20
| 26062 | 1 | 2078140456 |
UP 488
| ex WP 2009 |
GP20
| 26043 | 1 | 2078139329 |
UP 492
| ex UP 722 Built 7/60 |
GP20
| 26067 | 1 | 126402 |
WAMX 2005
| Kansas City Terminal. Ex MWLX, ex BNSF, nee ATSF. Sold to CRLX |
GP20
| 26855 | 1 | 86370 |
WP 2001
| First production GP20 |
GP20
| 25623 | 8 | 46400 |
WP 2002
| |
GP20
| 25624 | 3 | 93907 |
WP 2004
| |
GP20
| 25626 | 4 | 196974 |
WP 2005
| |
GP20
| 25627 | 4 | 46369 |
WP 2006
| *Scrapped* |
GP20
| 25628 | 2 | 112276 |
WP 2007
| blt 7/60 to UP 483 |
GP20
| 26041 | 4 | 62913 |
WP 2008
| blt 7/60 to UP 485 |
GP20
| 26042 | 3 | 90553 |
WP 2009
| |
GP20
| 26043 | 3 | 227263 |
WP 2010
| Blt 7/60, Ret. 2/83, To PNC 3/88 by UP |
GP20
| 26044 | 2 | 133287 |