C 3500 Truck 2WD V6-262 4.3L (1990)
Camshaft Gear/Sprocket: Recalls
Recall - Engine Cam Gear Misorientation
Number:
90C03
Section:
6A
Date:
October, 1989
Subject:
PRODUCT EMISSION CAMPAIGN 90C03 ENGINE CAM GEAR MISORIENTATION
Model and Year:
1989 M-VAN & 1990 G-VAN, M-VAN, C/K TRUCK & S/T TRUCK - 4.3L (RPO LB4) V-6 ENGINE
TO:
ALL CHEVROLET DEALERS
General Motors has determined that certain 1989 Chevrolet M-Vans & 1990 Chevrolet G-Van, M-Van, C/K & S/T Trucks equipped with 4.3L V-6
engines (RPO LB4) may have been built with the engine cam gear misoriented to the crankshaft gear. This mis-indexed cam can result in a lack of
performance or backfire. Additionally, the emission performance of these vehicles may be affected.
To correct this condition, an electronic scanning procedure to identify affected engines will be performed. Once identified, dealers will reorient the
camshaft.
VEHICLES INVOLVED
Involved are certain 1989 Chevrolet M-Vans & 1990 G-Van, M-Van, C/K & S/T Trucks equipped with 4.3L V-6 engines (RPO LB4) and built within
the following breakpoints:
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
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
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.
Whenever a vehicle subject to this campaign is taken into your new or used vehicle inventory. or it is in your dealership for service in the future, you
should take the steps necessary to be sure the campaign correction has been made before reselling or releasing the vehicle.
Owners of vehicles recently sold from your new vehicle inventory are to be contacted by the dealer, and arrangements made to make the required
correction according to instructions contained in this bulletin.
PARTS INFORMATION
