Complaints over time
Complaints about the 2015 Dynamax DX3 by year filed
Owner complaints about this model year, by the year they were filed with NHTSA.
Source: NHTSA ODI complaints file. The lighter column runs through October.
Model year
2015 Dynamax DX3
Truck, diesel, 4x2, built in United States. Owner complaints on file from Jul 23, 2026 to Jul 23, 2026.
Recall campaigns covering this model year0No recall campaign lists this model year
Owner complaints1Close to the median 2015 truck
Severity index0.02015 trucks average 15.4
First 24 months0Complaints in its first two years
Components
100% of complaints about the 2015 Dynamax DX3 name fuel system
Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls
No recall campaign lists the 2015 Dynamax DX3
Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.
Source: NHTSA ODI recalls file.
Owner complaints
What owners reported about the 2015 Dynamax DX3
The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.
1 complaint on file, page 1 of 1.
- Filed Jul 23, 2026Failure Jul 2, 2026Cabot, ARFuel/propulsion system
Got an engine warning light while traveling. Our RV only has 67,000 miles on it. Cummins local dealer reports it is a Selective Catalyst Reduction (SCR) unit problem and unit needs a $10,000 replacement. This SCR is supposed to last 500,000 miles. Cummins refuses to cover the cost for this SCR repair even though Cummins issued a 2022-2024 voluntary recall acknowledging the problem_Cummins CR 2113. We never received a recall notice. Failure to replace will progressively lead to ghost error codes and eventually having the unit go into limp mode before stopping unexpectedly. Many people with this problem report a similar refusal by Cummins and some have been left on the side of the road when the unit fails because it is a difficult problem to diagnose.
NHTSA complaint 11752392
Source: NHTSA ODI complaints file.
Investigations
NHTSA has not opened an investigation on this model year
Source: NHTSA ODI investigations file.
Service bulletins
No manufacturer communications on file
Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall.
Source: NHTSA manufacturer communications files.