Cutlass Ciera V6-3300 3.3L MFI VIN N (1993)
Ignition Control Module: Technical Service Bulletins
Harmonic Balancer & Ignition Module - Revised
NUMBER: 93-U-21
CORP.REF.NO: 216524
DATE: January 1993
SECTION: 6E3, V6
SUBJECT:
UPDATED HARMONIC BALANCER AND IGNITION MODULE
MODELS/YEARS:
1993 ACHIEVA AND CUTLASS CIERA
W/3300 (VIN N) ENGINE
This bulletin revises Service Manual Section 6E3, "Driveability and Emissions", for the 1993 Achieva and Cutlass Ciera models equipped with the 3300
(VIN N) engine. This bulletin contains information on the updated harmonic balancer and ignition module used for the 1993 model year. Refer to
"System Components - Crankshaft Position Sensor - Harmonic Balancer Interrupter Rings" in the 1993 Ninety-Eight/Eighty-Eight Service Manual for
the 3800 engine system which is similar to the 3300 engine system. See Page 6E3-C4-2 for a complete description of the revised system.
Please mark a change in the service manual from the former "1X" signal to the updated "18X" signal (CKT 643) on the following facing pages circuit
diagram:
3300 (VIN N) MF1 Cutlass Ciera
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Chart A-3 (1 of 2) Facing Page
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Chart A-3 (2 of 2) Facing Page
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Diagnostic Trouble Code (DTC) 42 Facing Page
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Chart C-4-1 Facing Page
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Chart C-4-2 Facing Page
3300 (VIN N) M Fl Achieva
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Chart A-3 (1 of 2) Facing Page
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Chart A-3 (2 of 2) Facing Page
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DTC 42 Facing Page
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Chart C-4-1 Facing Page
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Chart C-4-2 Facing Page
Important:
The 3300 (VIN N) and 3800 (VIN L) harmonic balancers and ignition modules are not Interchangeable.
