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RecallGazette

Vehicle problems, recalls & safety intelligence

Chevrolet C4500 2002–2016technical service bulletin

Bulletin 08-06-04-003D · NHTSA communication 10201100 · issued Dec 1, 2015

Technical service bulletin
communication type
Engine
component
2002–2016
model years
60
vehicle entries

Official summary

New Tool Availability - EN-48974-EGR Cooler Pressure Tester Adapter Set to Diagnose Duramax Diesel Engine EGR Cooler Engine Coolant Leaks into Combustion Chamber

Vehicles covered

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.