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Service bulletins for the 2020 Freightliner Cascadia

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

661 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Suspension are shown. Show all

Bulletins, newest first
SB32-0562022-03-03. Service bulletin. SUSPENSION. Freightliner Service Bulletin for Front Spring Eye Bushing Replacement
SS3083-FTL20212021-12-02. Service bulletin. SUSPENSION. Service Solution for Aero Height Control Interfering with RDF Alignment. The Aerodynamic Height Control feature on the New Cascadia is a feature that raises and lowers the air suspension with relation to vehicle speed in order to reduce drag and achieve better fuel efficiency. The Hadley Smart Valve (HSV) is the module that makes this possible by applying and exhausting air from the rear axle suspension as necessary.
FAB2862021-07-24. Service bulletin. SUSPENSION. Freightliner Action Bulletin FAB286 Cascadia Rear Suspension Ride Height
SS2083FTL20212021-07-22. Service bulletin. SUSPENSION. Service Solution for Aero Height Control Interfering with RDF Alignment and 42/523004/13 and 232/524042/9 Active for vehicles equipped with Hadley Smart Valve. The Aerodynamic Height Control feature on the New Cascadia is a feature that raises and lowers the air suspension with relation to vehicle speed in order to reduce drag and achieve better fuel efficiency. The Hadley Smart Valve (HSV) is the module that makes this possible by applying and exhausting air from the rear axle suspension as necessary.
SS10335232021-06-09. Service bulletin. SUSPENSION. Service Solution SS 1033523 Airliner Suspension Dump and Raise Functionality and Troubleshooting
CALFTL32-0082020-10-19. Service bulletin. SUSPENSION. Customer Advisory Letter for Drive Axle Leaf Spring Pin Hex Nut Torque Inspection. Select New Cascadia vehicles may have been delivered to customers with insufficient torque applied to the hex nuts at the front of the spring hanger.
CALFTL32-0072020-09-16. Service bulletin. SUSPENSION; STEERING. Customer Advisory Letter for Steer Axle Spring to Front Hanger Fastener Inspection. Our records indicate that you are the owner of certain vehicles. DTNA is requesting that the M20 fastener used to attach the steer axle spring to the forward spring hanger be inspected on these vehicles.
SB32-0332020-03-31. Service bulletin. SUSPENSION. Freightliner Service Bulletin for Front Axle Spacer Replacement. This service bulletin replaces the version dated 05/01/2016. This bulletin is updated to include the parts list. Some vehicles may exhibit a lean (right or left) due to weight difference on the front suspension. While this does not affect the operation of the vehicle, it may be visually unpleasing to many customers. To correct this condition, replace the existing front axle spacer on the low side of the vehicle with a thicker one.
SB00-0382020-03-18. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; SUSPENSION. Freightliner Service Bulletin for vibration troubleshooting - finding the cause. This version replaces the version dated 5/1/14 and adds New Cascadia.
WP20-001REV2020-02-15. Service bulletin. POWER TRAIN; LANE DEPARTURE; SUSPENSION; EQUIPMENT. Revision to a Warranty Policy Letter announcing the One Stop Supplier Extended Program Launch. The One Stop Supplier Extended Program streamlines the claim filing process because with One Stop Supplier Extended, the service network will file claims for some supplier-supported coverages in OWL. Revisions are in blue.
WP20-0012020-01-21. Service bulletin. UNKNOWN OR OTHER; POWER TRAIN; SUSPENSION; LANE DEPARTURE. Warranty Policy Letter announcing the One Stop Supplier Extended Program Launch. The One Stop Supplier Extended Program streamlines the claim filing process because with One Stop Supplier Extended, the service network will file claims for some supplier-supported extended coverages in OWL.
CALFTL32-0022019-11-21. Service bulletin. EQUIPMENT; SUSPENSION:REAR. Customer Advisory Letter for Airliner welded axle seats. The welded axle seats were installed incorrectly on the rear most drive axle for specific vehicles resulting in an incorrect axle pinion angle. The existing welded axle seats will be removed and replaced with new axle seats installed in the correct orientation.
SB32-0402019-11-20. Service bulletin. SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM; EQUIPMENT. Service Bulletin for troubleshooting Airliner suspension air-spring bag misalignment. This version updates applicability to New Cascadia.
CAL_Spindle_Nut2019-10-30. Service bulletin. SUSPENSION. Customer Advisory Letter notifying owner that a torque verification of the steer axle spindle nut will be conducted.
19TL-92019-08-08. Service bulletin. WHEELS; SUSPENSION; EQUIPMENT. DTNA Special Tools Group has approved the use of Haweka Axis4000 aftermarket alignment system for use on DTNA products at DTNA service locations. The Axis4000 system uses the reference points required by DTNA for precise, accurate, and repeatable measurements. Axis4000 is a sophisticated, user-friendly system that utilizes computer based camera-radio technology and references the center line of the frame for measuring and providing alignment results to DTNA specifications.
DOC-10341712019-04-01. Service bulletin. SUSPENSION. SS 1034171 Airliner Rear Suspension Chassis Lean Troubleshooting

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.