K 3500 Truck 4WD V8-454 7.4L VIN J SFI (1996)
Technical Service Bulletin # 96C21
Date: 960401
Recall - Catalytic Converter Welded In Backwards
CHEVROLET
No. 96-C-21
Date: 04-01-96
SUBJECT:
PRODUCT EMISSION CAMPAIGN 96-C-21 - CATALYTIC
CONVERTER WELDED INTO EXHAUST PIPE BACKWARDS
Model/Year:
1996 C/K TRUCKS WITH HEAVE DUTY EXHAUST EMISSIONS
To: All Chevrolet/Geo Dealers
General Motors has decided that some 1996 C/K Pickups and Chassis-Cabs with 5.7L (L31) or 7.4L (L29) gasoline engines and heavy duty exhaust
emissions may have been built with catalytic converters that were welded into the exhaust pipe backwards. In this configuration, the engine may not meet
the configuration specified in the emissions Application for Certification.
To correct this condition, dealers will inspection to see if the catalytic converter is installed in the proper orientation. If not, the exhaust crossover pipe
assembly will be replaced.
Vehicles Involved
Involved are some 1996 C/K Pickups and Chassis-Cabs with 5.7L (L31) or 7.4L(L29) gasoline engines and heavy duty exhaust emissions built within
the VIN breakpoints as shown.
Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle
Identification Number, owner name and address data, and are furnished to involved dealers with the campaign bulletin. Owner name and address data
furnished will enable dealers to follow-up with owners involved in this campaign.
These listings may contain owner names and addresses obtained from State Motor Vehicle Registration Records. The use of such motor vehicle
registration data for any other purpose is a violation of law in several states. Accordingly, you are urged to limit the use of this listing to the follow-up
necessary to complete this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no involved vehicles
currently assigned.
Owner Notification & Dealer Campaign Responsibility
OWNER NOTIFICATION
Owners will be notified of this campaign on their vehicles by Chevrolet Motor Division (see copy of owner letter included with this bulletin).
DEALER CAMPAIGN RESPONSIBILITY
All unsold new vehicles in dealers' possession and subject to this campaign must be held and inspected/repaired per the service procedure of this
campaign bulletin before owners take possession of these vehicles.
Dealers are to service all vehicles subject to this campaign at no charge to owners, regardless of mileage, age of vehicle, or ownership, from this time
forward.
Owners of vehicles recently sold from your new vehicle inventory with no owner information indicated on the dealer listing, are to be contacted by the
dealer, and arrangements made to make the required correction according to the instructions contained in this bulletin. This could be done by mailing to
such owners a copy of the letter accompanying this bulletin. Campaign follow-up cards should not be used for this purpose, since the owner may not as
yet have received the notification letter.
In summary, whenever a vehicle subject to this campaign enters your vehicle inventory or is in your dealership for service in the future, please take the
