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Chevrolet TSB #PIP5108
2012 Chevrolet Silverado
TSB Document:
Affected Component: ENGINE AND ENGINE COOLING:COOLING SYSTEM
- Summary
- This Preliminary Information communication provides information to the technician about vehicles that have an audible engine whine noise at 1500-1800 revolutions per minute. Technician will need to check the coolant level, remove serpentine belt to verify noise goes away, rotate the thermostat 90 degrees and retest, then replace thermostat and retest. Technician will replace the water pump if replacing the thermostat does not repair the audible engine whine noise.
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