BOTH types of ignition coils were used on 1988 Cutlass Ciera. Type 1 is a single unit with 3 coils built into it. If one coil goes bad, you must replace the entire unit. Type 2 incorporates 3 separate coils mounted on the control module. These coils can be replaced individually. (See picture below) You simply have to LOOK at your ignition coils to see which type your Cutlass is equipped with. Please note that these systems are NOT interchangeable.
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