The locomotive fleet of the PNWR/WPRR primarily consists of used "second generation" and used five “first generation” products of
General Motors Electro-Motive Division. Notable exceptions in the fleet include a handful of
GP/
SD9 locomotives which are now 60+ years old and still in regular service, as well as an
SD7. PNWR also operated a few unique locomotives, including the former PNWR 3300 (which was an EMD SD40-3MR), as well as one of the last remaining
SDP40Fs, DLMX 644, as well as
RSD-5, DLMX 324. The 17
GP39-2 units, numbered 2301-2317, were originally built as
ATSF units 3600-3616. WPRR (later PNWR) bought 17 of these locomotives in 1993 for expansion while the others became
BNSF units. Units 2303 (now repainted into
G&W colors), 2306, 2308, 2311, and 2312 are still in the ATSF Yellowbonnet paint with some having the P&W logos while the others have been repainted into G&W colors. Unit 2311 went on the
CORP in early 2021 and returned in late 2021. As of late 2014, PNWR 3300 was sold to
The Andersons as AEX 100020, and later to Progress Rail as of 2020 and is now used for export. #1851 on March 31, 2007 PNWR 1851 was sold to
Rick Franklin Corporation (RFC) and scrapped on July 25, 2012. PNWR 1853 was involved in an accident in Sheridan on October 31, 2009, the Willamina Local colliding with a standing train. No one was injured but 1853 suffered a bent frame that doomed its future. Although the WPRR roundhouse tried to keep it around, the bend put the main generator out of alignment. 1853 was scrapped on December 8, 2009, at the PNWR's Albany yard. Locomotives 1501, 1801, 1803, 1852 and 1854 were all retired from the PNWR and were originally meant to be scrapped by the railroad’s parent company Genesee and Wyoming as part of a fine resolution agreement with the EPA. But units 1501, 1801, 1803 and 1852 have been sold to
BUGX and unit 1854 was donated to the
Oregon Rail Heritage Foundation (ORHF), and is currently stored on the
Albany and Eastern Railroad (AERC) until the ORHF has enough space. GP40P-2 3001 and RP-E4D 101 were scrapped at RFC on September 15, 2023. Two of the PNWR GP40s were retired, with PNWR 3007 being sold to
Rapid City, Pierre and Eastern Railroad (RCPE) in 2021 and 3006 being sold to
Utah Railway in 2023. Both units kept these numbers. The rest of the GP40s, which are numbered 3003−3005 are currently awaiting disposition. The final
SW9 (later rebuilt into an SW1200m), numbered 1201, was retired in 2019 and was sold to AERC and then renumbered to 1866 in 2021. ==Commuter rail==