| Model/Make | Year | ECM Code Location |
| Buicks, All except Riviera | 1987-1993 | Behind dash, passenger side |
| Buick Riviera | 1987-1993 | Passenger side, behind kick panel |
| Cadillac, All | 1987-1995 | Behind dash, passenger side |
| Chevrolet Beretta | 1987-1994 | Behind dash, passenger side |
| Chevrolet Camaro | 1987-1992 | Behind dash, passenger side |
| Chevrolet Camaro | 1993 | Under hood, passenger side near firewall |
| Chevrolet Camaro | 1996-2002 | Under hood, passenger side near firewall |
| Chevrolet Caprice | 1987-1993 | Under hood, passenger side near firewall |
| Chevrolet Cavalier | 1987-1994 | Behind dash, passenger side |
| Chevrolet Celebrity | 1987-1989 | Behind dash, passenger side |
| Chevrolet Gas Trucks | 1987-1995 | Behind dash, passenger side |
| Chevrolet SS454 | 1990-1993 | Behind dash, passenger side |
| Chevrolet Gas Trucks | 1996-2004 | Under hood, drivers side near firewall |
| Chevrolet Duramax 6.6L | 2000-2004 | Under hood, drivers side in front of battery |
| Chevrolet SUVs | 1987-1995 | Behind dash, passenger side |
| Chevrolet SUVs | 1996-2004 | Behind headlight |
| Chevrolet Corsica | 1987-1994 | Behind dash, passenger side |
| Chevrolet Impala SS | 1996 | Behind headlight |
| Chevrolet Lumina | 1987-1993 | Behind dash, passenger side |
| Chevrolet Monte Carlo | 1987-1988 | Passenger side, behind kick panel |
| Chevrolet S10/Xtreme | 2001-2002 | Under hood, passenger side, behind battery |
| Corvette L98 | 1985-1989 | Behind dash, passenger side |
| Corvette L98 & LT1 | 1990-1996 | Under hood, drivers side near firewall |
| Corvette LS1 & LS6 | 1997-2004 | Inside passenger side fender, behind front tire |
| Dodge Dakota | 1998-2003 | Under hood, passenger side against fender |
| Dodge Durango | 1998-2003 | Under hood, passenger side against fender |
| Dodge Ram Gas | 1998-2003 | Under hood, passenger side on the firewall |
| Dodge Ram Diesel | 1998-2002 | Mounted directly to passenger side of motor |
| Ford Contour | 1999-2003 | Passenger side, where floor meets the firewall |
| Ford Crown Vic | 1988-2004 | Under hood, drivers side in firewall |
| Ford Escort | 1988-2003 | Under front of center console |
| Ford Excursion | 1999-2003 | Under dash, drivers side |
| Ford Expedition | 1997-2002 | Under hood, drivers side in firewall |
| Ford Explorer | 1991-2001 | Under hood, drivers side in firewall |
| Ford Focus | 2000-2003 | Passenger side, behind kick panel |
| Ford F-Series Diesel | 1994-1998 | Under hood, drivers side in firewall |
| Ford F-Series Diesel | 1999-2003 | Under dash, drivers side |
| Ford Harley Davidson | 2002-2004 | Under dash, passenger side |
| Ford Lightning | 1992-1995 | Under hood, drivers side in firewall |
| Ford Lightning | 1999-2004 | Under dash, passenger side. |
| Ford Mustang, all | 1987-2004 | Passenger side, behind kick panel |
| Ford Probe 2.0L | 1992-1997 | Under front of center console |
| Ford Ranger | 1988-2000 | Under hood, in firewall |
| Ford Taurus | 1988-1995 | Behind dash, passenger side |
| Ford Taurus | 1996-2003 | Under hood, drivers side near firewall |
| Ford Tempo | 1988-1994 | Under dash, drivers side |
| Ford Thunderbird, all | 1987-1997 | Passenger side, behind kick panel |
| GMC Trucks | 1987-1995 | Behind dash passenger side |
| GMC Trucks | 1996-2004 | Under hood, drivers side near firewall |
| GMC Duramax 6.6L | 2001-2004 | Under hood, drivers side in front of battery |
| GMC SUVs | 1987-1995 | Behind dash passenger side |
| GMC SUVs | 1996-2004 | Under hood, drivers side near firewall |
| Mercury Cougar | 1988-1997 | Passenger side, behind kick panel |
| Mercury Cougar | 1999-2002 | Passenger side, where floor meets the firewall |
| Mercury Marquis | 1993-2004 | Under hood, drivers side in firewall |
| Mercury Marauder | 2003-2004 | Under hood, drivers side in firewall |
| Mercury Mystique | 1995-2003 | Passenger side, where floor meets the firewall |
| Mercury Sable | 1988-1995 | Behind dash, passenger side |
| Mercury Sable | 1996-2003 | Under hood, drivers side near firewall |
| Oldsmobile, All | 1987-1995 | Behind dash passenger side |
| Pontiac, All except below | 1987-1995 | Behind dash passenger side |
| Pontiac Firebird | 1987-1992 | Behind dash passenger side |
| Pontiac Firebird | 1993-2002 | Under hood, passenger side near firewall |
| Pontiac Trans Am | 1987-1992 | Behind dash passenger side |
| Pontiac Trans Am | 1993-2002 | Under hood, passenger side near firewall |
