Toyota HILUX 2008 Owner's Manual page 8

Check the model code to see what type of model your vehicle is.
Basic code
GGN: Models with 1GR−FE engine
TGN: Models with 2TR−FE engine
KUN: Models with 1KD−FTV engine
T G N 1 6 R − C
15, 16: Two−wheel drive models
25, 26: Four−wheel drive models
The model code appears on the manufacturer's plate with the heading "MODEL".
See "Your Toyota's identification" on page 176 for the manufacturer's plate location.
Model code
Cab type
T: Single−cab
C: Extra−cab
P: Double−cab
Driving system
vii
Transmission type
A: 5−speed automatic transmission
P: 4−speed automatic transmission
M: Manual transmission
M S
Grade
S: SR
D: DLX