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Chevrolet TSB #GCUS-3-811
2015 Chevrolet Express
TSB Document:
Affected Component: ENGINE AND ENGINE COOLING
- Summary
- 31170 01 - Service Update. Certain vehicles may have contact between the rear leaf spring shackle bolt and rear HVAC coolant lines that may rub through creating a coolant leak. This leak may cause the engine to overheat, leading to loss of propulsion or loss of HVAC performance. Dealers will replace the shackle bolt; inspect and, if necessary, replace the auxiliary heater hose.
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