Whilst we're awaiting
the next wave of '14 info, I thought I would post some information that clarifies the "S" pre-production stages...
Prototype vehicles built to provide verification that the production design and the
intended production process for components, systems and vehicles meet objectives. “Production”
means that the product and process design release is complete for the Product and Process
Design Complete (PPDC) milestone. These components may be built using hard or soft tools, as
determined to be appropriate based on part or process knowledge required. Design verification
testing should be successfully completed before parts are submitted for S0 Build. PPSR’s are
required for all non-PPAP approved parts.
are vehicles built to confirm production design intent, validate parts, and prove
out vehicle and assembly processes (at the assembly plants when feasible). All parts used are
required to have full PSO and PPAP Approval. S1 vehicles provide early detection, identification
and resolution of production process issues prior to S2 vehicle build. Production Control Systems
are used to order, track and supply parts. Production intent containers/racks should be tested
using S1 level parts. Grained and new color mastered materials are required and should be
accompanied by a part inspection report for each Supplier shipment.
S2 VEHICLES: sellable vehicles
built by manufacturing at the assembly plants to verify Corporate
and Supplier production tooling, equipment and processes, and to confirm successful resolution of
any CN's written to correct problems found in the S0/S1 Build or testing. All parts, including
powertrains, supplied by the Production Suppliers must be manufactured using production tools
(on their home lines) and processes.