2015 Ram 2500: Noise on cold start up
Common wear/failure (not a recall)
Symptoms
Owners of the 2015 2500 report: noise on cold start up. CarComplaints.com lists 3 owner complaints, average mileage 6,700 miles.
NHTSA has 36 owner complaints for the 2015 2500 in this area. Examples:
- NHTSA complaint ODI #11753555 (filed 07/29/2026): “On two separate occasions, once in 2025 and again in july 2026, while pulling a travel trailer an emissions control fault in the egr system caused the cummins turbo diesel engine in the truck to lose power. at this reduced power, highway speeds could not be ma…”
- NHTSA complaint ODI #11681231 (filed 08/18/2025): “Mopar has discontinued parts for many ram vehicles with a 6.4l hemi motor including the exhaust manifolds. my exhaust manifold is currently cracked and has an audible leak. exhaust enters the cab of the vehicle when starting, idling, or reversing. they have no…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: none clearly reported. Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Pro
Internal engine work (lifters, oil consumption, fuel dilution diagnosis) requires engine teardown or dealer software/tests. (Our assessment.)
Cost
No sourced cost range: get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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