Engine Control Module (ECM) Can Fail on Buick Century

The Engine Control Module (ECM) can fail causing stalling, and engine and transmission drivability concerns.

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Average mileage: 137,149 (76,000–220,000)
7 model years affected: 1990, 1991, 1992, 1993, more1994, 1999, 2001
11 people reported this problem
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Viewing 1 - 3 of 3 problem details
1991 Buick Century 76,000 mi,
ecu module code comes up, engine rough starting, bad idle, bad shifting, runs poorly, overheats.
1992 Buick Century 170,000 mi,
Car dies when up to running temp. Then won't start. Changed coil packs and still dies.
1994 Buick Century 82,599 mi,
trying too fix now