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-488andGM-RK-488WC.