2018 Chevrolet Silverado 2500HD: Engine complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 13 owner complaints for the 2018 Chevrolet Silverado 2500HD that list the engine component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11747241 (filed 06/29/2026): “2018 chevy silverado 2500diesel duramax (63,000 miles & garage kept) while pulling 37' camper on flat terrain, push rod bent and broke in half - violently shaking and missing; engine was ruined. engine light did not appear until after it started shaking. luckily this happened before crossing ov…”
- NHTSA complaint ODI #11522357 (filed 05/16/2023): “The contact's son owns a 2018 chevrolet silverado 2500. the contact stated that while driving at an undisclosed speed, the check engine and “service vehicle" messages was displayed. the vehicle was taken to a local dealer, where it was diagnosed that the diesel exhaust fluid (def) and catalytic conv…”
- NHTSA complaint ODI #11497014 (filed 12/12/2022): “The contact owns a 2018 chevrolet silverado 2500. the contact stated that while driving at various speeds, the vehicle lost motive power and stalled without warning. the contact took the vehicle to the dealer however, the mechanic was unable to determine the cause of the failure. the dealer replaced…”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
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 for this issue. Get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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