Download Module: All Technical Service Bulletins Recall – Corrosion/Moisture Entering the PCM Product Emission 99090 – PCM Corrosion/Moisture Intrusion #99090 99090–PCM Corrosion/Moisture Intrusion (Install Protective PCM Shield/Cover Assembly) Certain 1997, 1998 and 1999 Chevrolet Cavaliers and Pontiac Sun fires Located in Fifteen U. S. High Road Salt Corrosion States (CT, IL, IN, MA, ME, MN, NH, NJ, NY, OH, PA, RI, VT, and WI) and in Ontario, Quebec and Atlantic Provinces, and Certain 1995, 1996, 1997, 1998 and 1999 Chevrolet Cavaliers and Pontiac Sunfires located in Manitoba, Saskatchewan, Alberta, British Columbia, the Yukon and Northwest Territories. Condition General Motors has decided to conduct a Voluntary Emission Campaign involving certain 1997, 1998 and 1999 Chevrolet Cavalier and Pontiac Sun fire model vehicles located in fifteen U. S. high salt corrosion states and in Ontario. Quebec and Atlantic provinces; and certain 1995, 1996, 1997, 1998, and 1999 Chevrolet Cavalier and Pontiac Sunfire model vehicles located Manitoba, Saskatchewan, Alberta, British Columbia, the Yukon and Northwest Territories. These vehicles have the potential to experience moisture entering the Power train Control Module (PCM) , as a result of corrosion after extended exposure to road salt, Moisture entering the PCM can lead to symptoms including illumination of the Check Engine light or the engine running rough. If these symptoms are ignored, the engine may stall and may not be able to be restarted. Correction Dealers are to seal the Powertrain Control Module (PCM) in a protective shield/cover assembly. Parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO) . Please refer to you “involved vehicles listing” prior to ordering requirements Normal orders should be placed on a DRO = Daily Replenishment Order. An emergency requirement should be ordered on a CSO = Customer Special Order. Service Procedure 1. Disconnect the negative battery cable. 2. Remove the right-hand engine splash shield (in front of the right front tire assembly) 3. Remove the horn attachment bolt. Disconnect the wire and remove the horn.
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