It is the type of chassis in which the engine is mounted in front of the driver's cabin.
Front left chassis rail on outside. you can usually see it through wheel arch in front of tyre.
ae86
CB7
its the chassis code for 89-94 Nissan 240sx
For anyone who does not know, your chassis code is IN YOUR VIN (Vehicle Identification Number). The fourth, fifth and sixth digits of your VIN are your chassis code. Your chassis code DOES NOT CHANGE no matter what engine you put in your car or what you do to your car. You can do a full Type R conversion on your '96 CX hatch and it's still going to be an EJ6 because the VIN does not change.http://www.honda-tech.com/zerothread/1928390
behind the front bumper on the chassis.
GC8
On the nameplate on the Firewall in front the driver.
P1308 Chassis Acceleration Sensor Signal Low P1308 Chassis Acceleration Sensor Signal Low
If you look under at the car's VIN numbers, the chassis code is in the 4th thru 6th positions.
Look under the car. It goes from front to rear.