Recall - Update of 92-C-53 Converter Bead Replacement: Overview

96021

CAMPAIGN: CATALYTIC CONVERTER BEAD REPLACEMENT

Issued: 10/01/96

PRODUCT EMISSION CAMPAIGN

SUBJECT:
96021 CATALYTIC CONVERTER BEAD REPLACEMENT

MODELS:
1992 C, K TRUCKS, M, L & G VANS EQUIPPED WITH 4.3L (LB4 OR L35 ENGINES (CALIFORNIA VEHICLES ONLY)

THIS BULLETIN SUPPLEMENTS BULLETIN 92-C-52 ISSUED JULY 1996. THIS SUPPLEMENT CONTAINS CHANGES IN THE "VEHICLES INVOLVED", "CUSTOMER NOTIFICATION", "SERVICE PROCEDURE", AND "CLAIM INFORMATION" SECTIONS. CHANGES OR ADDITIONS ARE SHOWN IN BOLD AND ITALIC TYPE. ADDITIONALLY, A NEW OWNER'S LETTER WILL BE SENT TO CUSTOMERS THAT ARE NOT REGISTERED IN THE STATE OF CALIFORNIA. A COPY OF THE NEW LETTER IS ATTACHED. THIS SUPPLEMENT SHOULD BE FILED WITH BULLETIN 92-C-52.

Certain 1992 C, K Trucks, and M, L, G Vans equipped with 4.3L engines (RPO LB4 - VIN Code Z or RPO L35 - VIN Code W) and California emissions equipment (RPO NB2) and GVW less than 8500 lb. may be emitting non methane hydrocarbons (NMHC) and oxides of nitrogen (NOx) in excess of California emission standards. Excess emissions may cause a vehicle to fail state mandated emission tests.

To correct this condition, dealers are to replace the catalytic converter catalyst beads.