Engine Control Module (ECM) Can Fail on Buick Century

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

RepairPal Verified
Average mileage: 137,149 (76,000–220,000)
7 model years affected: 1990, 1991, 1992, 1993, more1994, 1999, 2001
11 people reported this problem
3 people shared problem details
1991 Buick Century76,000
ecu module code comes up, engine rough starting, bad idle, bad shifting, runs poorly, overheats.
1992 Buick Century170,000
Car dies when up to running temp. Then won't start. Changed coil packs and still dies.
1994 Buick Century82,599
trying too fix now
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