93 pontiac trans am with a lt1 we have no spark if you have a scope its a easy diag but this right here will cut your guess work down we needed the ignition control module p div class b factrow b twofr div class b vlist2col ul li div author ugly hp div li li div views 44k div li ul ul li div video duration 4 min div li ul div div div li page 1 of 3 how to test the gm ignition control module 1995 2005 symptoms of a bad ignition module and ignition coil basic operating theory ignition control module icm circuit descriptions ignition coil circuit descriptions 1998 to 2002 camaro firebird harness wiring info new pcm pinout info specific to 98 99 02 f body 3 30 2013 2004 pontiac gto wiring harness info wiring harness info specific to the 2004 gto ls1 lsxharness adam will rework most ls1 vortec truck and f body lt1 harnesses