Chevrolet Express 2008–2010 — technical service bulletin
Bulletin PIP-4822 · NHTSA communication 10036364 · issued Aug 1, 2010
Technical service bulletin
communication type
Engine and Engine Cooling
component
2008–2010
model years
13
vehicle entries
Official summary
Chevrolet/gmc: possible engine overheat or loss of coolant. Normal si diagnostics will lead to inspecting the water pump for proper operation. When water pump is removed, be sure to inspect the impeller. *pe
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.