12 and 13 are idle speed controller malfunctions. 74 indicates that the brake pedal was pushed while reading the codes.
Grand Sedan
Luxury sedan
What does the codes like OP in AIEEE stand for?
You can go to Sears and they have a very reasonably priced pocket reader! The unit costs around $55 with tax and has excellent instructions with it. It also has an included CD that installs on your home computer to explain what the codes mean.
Grand Touring Prototype
Grand Touring Coupe or Grand Touring Convertible
The Grand Hotel is on the Grand Strand.
In the bleachers
Deoxyribonucleic acid
virtual
one of two types of cpt codes. stand alone codes give a full description
The letters GT stand for Grand Touring