Sonnax pilot GM-PI-21 comes standard in the following 6L80-series Sonnax performance converter kits: GM-RK-685, GM-RK-685WC, GM-RK-688, GM-RK-688WC.
The pilot also adapts the following 4L80-series Sonnax performance converter kits to Gen. III (LS) engines: GM-RK-485, GM-RK-485WC, GM-RK-488 and GM-RK-488WC.

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