12200411 PCM (24x)

2001-2002 GM PCM. Requires an EFI 24x™ LT1/LT4 conversion for coil per cylinder ignition. Supports 4L60E, 4L80E, and manual transmissions. Supports cruise control for both cable and electronic throttle. This is our recommended PCM for the LT1/LT4 engine.

E40 ECM (24x)

2005-2006 GM ECM. Requires an EFI 24x™ LT1/LT4 Conversion. Electronic throttle and flat response knock sensors required. Supports 4L60E and manual transmissions. Cruise control supported withTrailblazer SS or SSR calibration.

E38 ECM (58x)

2007-Newer GM ECM. Requires an EFI 58x™ LT1/LT4 Conversion. Electronic throttle and flat response knock sensors required. Supports 4L60E/4L80E, 6L80E/6L90E, and manual transmissions. Cruise control not supported.

E67 ECM (58x)

2007-Newer GM ECM. Requires an EFI 58x™ LT1/LT4 Conversion. Electronic throttle and flat response knock sensors required. Supports 4L60E/4L80E and 6L80E/6L90E transmissions. Cruise control supported with Trailblazer SS calibration.

1994-1995 OBD-I PCM

1994-1995 OBD-I LT1 Powertrain Control Module (PCM). Supports 1994-1995 4L60E and manual transmissions. Requires the LT1 Optispark distributor for its high and low resolution engine position signals. Poor tuning support and the problematic Optispark distributor make this PCM undesirable to many enthusiasts.

1996-1997 OBD-II PCM

1996-19957 OBD-II LT1 Powertrain Control Module (PCM). Supports 1996-Newer 4L60E and manual transmissions. Requires the LT1 Optispark distributor for its high and low resolution engine position signals. Poor tuning support and the problematic Optispark distributor make this PCM undesirable to many enthusiasts.