obd 2 pinout for GM cars
Should be suitable for most modern GM cars - Buick, Cadillac, Chevrolet, Daewoo
GMC, Holden, Opel, Vauxhall.
Most GM cars produced in 1996-2003 use J1850-VPW interface. GM cars produced in 2003-2006 use J1850-VPW interface or CAN. Most cars produced after 2006 are equipped with CAN bus.
|
Pin Number |
Pin Name |
Description |
| 1 | Second UART | |
| 2 | J1850 | J1850(+) VPW |
| 3 | Comfort | |
| 4 | GND | Chassis ground |
| 5 | SGND | Signal Ground |
| 6 | HS-CAN | PCM |
| 7 | K-Line | n/c |
| 8 | CCM | |
| 9 | first UART | |
| 10 | PWM | n/c |
| 11 | EVA controller | |
| 12 | ABS | |
| 13 | SIR | |
| 14 | HS-CAN(-) | E&C |
| 15 | L-Line | n/c |
| 16 | Battery+ | Battery +, unswitched |
Since 2002, there is another pinout - GM-LAN (for vehicles equipped with CAN bus)
|
Pin Number |
Pin Name |
Description |
| 1 |
SW-LS-CAN (33kB) or DW-FT-CAN (+) (<125kB) |
|
| 2 | J1850 | n/a |
| 3 | MS-CAN (+) (95kB) | |
| 4 | GND | Chassis ground |
| 5 | SGND | Signal Ground |
| 6 | HS-CAN | ISO 15765 HS-CAN (+) (500kB) |
| 7 | K-Line | n/a |
| 8 | n/a | |
| 9 | DW-FT-CAN (-) (<125kB) | |
| 10 | PWM | n/c |
| 11 | MS-CAN (-) (95kB) | |
| 12 | K-Line (KW82 Prot.) | |
| 13 | reserved | |
| 14 | HS-CAN(-) | ISO 15765 HS-CAN (-) (500kB) |
| 15 | L-Line | n/a |
| 16 | Battery+ | Battery +, unswitched |
OBD-2 compatibility list
Note that list is not 100% complete!
| Model | Engine | Year (starting from) | OBD-2 Protocol |
|---|---|---|---|
| Buick Century | 2002 | VPW J1850 | |
| Buick Rivera | 1998 | VPW J1850 | |
| Buick Skylark | 1996 | VPW J1850 | |
| Cadillac Deville | 2000 | VPW J1850 | |
| Cadillac Eldorado | 1998 | VPW J1850 | |
| GMC Jimmy | 1999 | VPW J1850 | |
| GMC K2500 | 1997 | VPW J1850 | |
| GMC Lumina | 2001 | VPW J1850 | |
| GMC Yukon | 1998 | VPW J1850 | |
| Chevrolet Astra | 2.0 Flex Power, Gasoline (127 HP) | 2004 | ISO 14230-4, ISO 9141-2 |
| Chevrolet Aveo | 1.4, Gasoline (60HP) | 2005 | KWP FAST |
| 1.6, Gasoline (103HP) | 2005 | KWP FAST | |
| 1.6, Gasoline (103HP) | 2007 | KWP FAST | |
| 1.2, Gasoline (70HP) | 2008 | KWP FAST | |
| 1.5, Gasoline (?HP) | 2008 | KWP FAST | |
| Gasoline (84 HP) | 2009 | ISO 14230-4 | |
| 1.2, Gasoline or LPG (82HP) | 2009 | KWP FAST | |
| Chevrolet Blazer | 1995 | VPW J1850 | |
| Chevrolet Blazer LT | Gasoline (191 HP) | 1997 | VPW J1850 |
| Chevrolet Camaro | 1997 | VPW J1850 | |
| 1997 | ISO 14230-4, ISO 9141-2 | ||
| 1998 | VPW J1850 | ||
| 3.8 V6, Gasoline (193HP) | 1998 | VPN | |
| 1999 | VPW J1850 | ||
| 5.7 LS1, Gasoline (288HP) | 1999 | VPN | |
| 2000 | VPW J1850 | ||
| L36, Gasoline (191 HP) | 2002 | VPW J1850 | |
| 6.2 V8, Gasoline (405HP) | 2012 | CAN 11bit (500kb) | |
| Chevrolet Caprice | 1996 | VPW J1850 | |
| Chevrolet Captiva | 2.0 VCDI, Diesel (150HP) | 2006 | CAN 11bit (500kb) |
| 2.2 VCDI, Diesel (163HP) | 2011 | CAN 11bit (500kb) | |
| Chevrolet Cavalier | 1996 | VPW J1850 | |
| 1998 | VPW J1850 | ||
| 1999 | VPW J1850 | ||
| Chevrolet Cobalt | Gasoline (145 HP) | 2006 | CAN |
| Chevrolet Corvette | 2000 | VPW J1850 | |
| V8, Gasoline (400HP) | 2007 | CAN 11bit (500kb) | |
| Chevrolet Corvette C5 | 5.7 V8, Gasoline (350HP) | 2003 | VPN |
| Chevrolet Corvette C6 | 6, Gasoline (404HP) | 2005 | ISO 9141 |
| LS7, Gasoline (512HP) | 2007 | CAN 11bit (500kb) | |
| 6.2, Gasoline (436HP) | 2008 | CAN 11bit (500kb) | |
| Chevrolet Cruze | 2.0 VCDi, Diesel (150HP) | 2010 | CAN 11bit (500kb) |
| 2.0 VCDI, Diesel (163HP) | 2011 | CAN 11bit (500kb) | |
| Chevrolet Epica | 2.5, Gasoline (155HP) | 2004 | KWP FAST |
| 2.0 vdCi, Diesel (150HP) | 2007 | CAN 11bit (500kb) | |
| Chevrolet Evanda | Gasoline (176 HP) | 2005 | |
| Chevrolet Express van | V8 5.3L, Gasoline (300HP) | 2003 | VPN |
| Chevrolet HHR | Gasoline (168 HP) | 2008 | |
| Chevrolet Impala | 2000 | VPW J1850 | |
| 2002 | VPW J1850 | ||
| Chevrolet Kalos | 1.4 SE, Gasoline (93 HP) | 2005 | ISO 14230-4, ISO 9141-2 |
| 1.4 16V, Gasoline (93 HP) | 2006 | ISO 14230-4 | |
| Chevrolet Lumina | 1996 | VPW J1850 | |
| Chevrolet Malibu | 1997 | ||
| Chevrolet Malibu | 3.1 V6, Gasoline (150HP) | 2000 | VPN |
| Chevrolet Matiz | 1.0 SE LPG.i, Gasoline (64HP) | 2006 | KWP FAST |
| Gasoline (66 HP) | 2007 | ISO 14230-4, ISO 9141-2 | |
| 0.8, Gasoline (65HP) | 2009 | KWP FAST | |
| Chevrolet Nuriba | 1.8 BVA, Gasoline or LPG (122HP) | 2006 | KWP FAST |
| Chevrolet Optra | 1.6, Gasoline (109HP) | 2005 | KWP FAST |
| Chevrolet Orlando | 1.8, Gasoline (146HP) | 2012 | CAN 11bit (500kb) |
| 2.0 HDi, Diesel (163HP) | 2012 | CAN 11bit (500kb) | |
| Chevrolet Rezzo | 1.6 16v, Gasoline or LPG (107HP) | 2005 | ISO 9141 |
| Chevrolet S10 | 2000 | VPW J1850 | |
| Chevrolet Silverado | 2002 | VPW J1850 | |
| 6.5, Diesel (194HP) | 1996 | VPN | |
| Chevrolet Spark | Gasoline (81 HP) | 2008 | |
| 1, Gasoline (68HP) | 2011 | KWP FAST | |
| Chevrolet Tahoe | 1996 | VPW J1850 | |
| 5.7, Gasoline (265HP) | 1998 | VPN | |
| 5.3, Gasoline (275HP) | 2001 | VPN | |
| 5.3 V8, Gasoline (290HP) | 2005 | VPN | |
| Chevrolet Trailblazer | Gasoline (270 HP) | 2002 | PWM J1850 |
| Gasoline (270 HP) | 2002 | ||
| Chevrolet Trans Sport | Gasoline (184 HP) | 2000 | |
| Gasoline (186 HP) | 2003 | ||
| Chevrolet Transsport | Gasoline (184 HP) | 1997 | VPW J1850 |
| Chevrolet Uplander | 3.9, Gasoline (200HP) | 2007 | CAN 11bit (500kb) |
| 3.9, Gasoline (250HP) | 2007 | CAN 11bit (500kb) | |
| Chevrolet Venture | 1998 | VPW J1850 | |
| 3.4, Gasoline (160HP) | 2002 | VPN |
Some OBD-II cables schemes:
- OBD-2 ISO 9141-2 (14230-4, KWP2000) simple serial cable
- OBD-2 J1850 PWM, J1850 VPW serial ELM327 cable
- OBD-2 universal ISO 15765-4 CAN, SAE J1850 PWM, SAE J1850 VPW, ISO 9141-2, ISO 14230-4 and SAE J1939 diagnostic cable
correct
incorrect