One problem related to oil pump has been reported for the 2002 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Chevrolet Impala based on all problems reported for the 2002 Impala.
Valve broke off in engine causing catastrophic engine failure. 60,400 miles on engine at time. Oil reservoir was full, oil pump was operational and filter had not collapsed. Engine coolant was full.