S15/T15 Sonoma P/U 2WD V6-4.3L VIN W (1996)
Technical Service Bulletin # 96-C-34
Date: 960501
Recall - Vehicle Control Module Calibration Update
96-C-34
CAMPAIGN: VEHICLE CONTROL...
Issued: 05/01/96
SUBJECT:
VEHICLE CONTROL MODULE (VCM) CALIBRATION
MODELS:
1996 SONOMA/S10 TWO-WHEEL DRIVE PICKUPS EQUIPPED
WITH 4.3L ENGINE (LF6) AND 5-SPEED TRANSMISSION (M50) BUILT AT LINDEN ASSEMBLY PLANT
General Motors has decided that certain 1996 Sonoma/S10 two wheel drive Pickup Trucks equipped with 4.3L engine (LF6) and manual 5 speed
transmission (M50), built at the Linden Assembly plant, may an have incorrectly programmed Vehicle Control Modules (VCM) for engine calibration.
There are two possible programming errors. First, some vehicles intended for U.S. and export sale (engine calibration P/N 16232334) may have engine
calibrations (P/N 16232335) intended for vehicles sold in Canada. Second, some of these two wheel drive pickups intended for sale in Canada (P/N
16232335) may have engine calibrations (P/N 16232336) intended for four wheel drive pickups sold in the U.S.
To correct this condition, dealers are to reprogram the vehicle VCM with the correct data files.
Vehicles Involved
Involved are CERTAIN 1996 Sonoma/S10 two wheel drive Pickup Trucks equipped with 4.3L engine (LF6) and manual 5 speed transmission (M50)
and built at the Linden Assembly plant within the VIN breakpoints as shown.
NOTICE:
Dealers should confirm vehicle eligibility through VISS (Vehicle Information Service System) or Service Net (GMC only) prior to beginning
campaign repairs. [Not all vehicles within the above breakpoints may be involved]
Involved vehicles have been identified by Vehicle Identification Number. Computer listings containing the complete Vehicle Identification Number,
customer name and address data have been prepared, and are being furnished to involved dealers with the campaign bulletin. The Customer name and
address data furnished will enable dealers to follow up with customers involved in this campaign. Any dealer not receiving a computer listing with the
campaign bulletin has no involved vehicles currently assigned.
These dealer listings may contain customer 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.
Parts Information/Customer Notification
NO PARTS ARE REQUIRED FOR THIS CAMPAIGN.
Customers will be notified of this campaign on their vehicles by General Motors (see copy of divisional customer letter included with this bulletin).
In order to ensure full protection under the emission warranty, and the right to participate in future recall, the customer notification letter recommends
that customers have their vehicles serviced as soon as possible. It also advises that failure to do so could legally be determined to be lack of proper
maintenance, and that the vehicle may fail a state or local emission inspection test if the recall work is not completed.
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 customers take possession of these vehicles.
Dealers are to service all vehicles subject to this campaign at no charge to customers, regardless of mileage, age of vehicle, or ownership, from this time
forward.
