For 1990-2009 cars

For automatic transmission AF40, the identification plate is on the top of the transmission housing.

Position | Data
--- | ---
1 | Aisin Warner transmission type
2 | Fabrication line 1 = 000001 - 500000 Fabrication line 2 = 500001 - 999999
3 | Transmission type (AF40)
4 | Model code
5 | GM parts number
6 | Production serial number 04 = Year of production (2004) F = Month of production

• | A: January

• | B: February

• | C: March

• | D: April

• | E: May

• | F: June

• | G: July

• | H: August

• | J: September

• | K: October

• | L: November

• | M: December

38 = Model Designation

00001 = Production Serial Number