Replaces dealer part numbers: LX346T GD1998A 10476627 10489422 SH7378 D1928A 8104672020 8104894220 6H1040 10467202 Installation Instruction-Some ignition modules are installed inside the distributor. But you need to disconnect the negative cable of the battery before you can take the ignition module off and replace it. You can refer to the circuit diagrams of specific and models of for vehicles//Chev-y Product name: Ignition Spark Control Module Replace Part Number 10489422 for CENTURY 1987-2005 for REGAL 1988-1996 for RENDEZVOUS 2002-2005 for 1994-1998 for 1987-1988 for 1987-1996 for 1993-1995 for CAVALIER 1987-1994 for CELEBRITY 1987-1990 for CORSICA 1987-1996 for 2000-2005 for 1990-2001 for APV 1996 for 1997-2003 for 1995-2005 for VENTURE 1997-2005 for PASSPORT 1994-1995 for RODEO 1993-1995, TROOPER 1992-1995 for ACHIEVA 1994-1998 for ALERO 1999-2004 for CUTLASS 1995-1999 for CUTLASS CIERA 1987-1996 for CUTLASS CRUISER 1987-1989 for CUTLASS 1988-1997 for FIRENZA 1987 for SILHOUETTE 1996-2004 for 6000 1987-1991 for 2001-2005 for 1993-1995 for GRAND AM 1994-2005 for GRAND PRIX 1988-2003 Colour:black + silver Material:Plastic + Metal Package Contents: 1 * ignition spark control module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.