There is no verified, universal feature list that defines how every Pontiac G6 1SA differs from every 1SB. These are option-group codes, and their meaning depends on the model year, body style and trim. For a particular car, use its original window sticker or build information—or have a GM/Pontiac parts or service department identify its factory equipment.
What do 1SA and 1SB mean on a Pontiac G6?
They are option-group identifiers, not stand-alone descriptions of a G6’s trim or a guaranteed list of features. The sources available do not establish a complete, authoritative 1SA-versus-1SB equipment comparison that applies across G6 years and body styles.
That distinction matters because a code copied from another Pontiac model—or from a Cadillac—may describe a different package. The G6 did not have a V8, so a V8-based interpretation discussed in the original forum thread does not fit this car.
What the 2009 listings show
A 2009 Pontiac G6 configuration listing includes 1SA and 1SB in different configurations. It labels the 1SA sedan as limited availability and shows 1SB across multiple body styles and trims. The configurations also vary in engine and transmission, so the option-group code should be read alongside the vehicle’s other details. See the 2009 G6 trim listing.
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This listing does not establish that 1SB universally adds a particular feature over 1SA. Nor does it identify a definitive feature-by-feature difference for every 2009 G6.
Is a 2009 G6 GT coupe a 1SA?
The code alone cannot confirm that a car is a GT coupe or tell you its exact equipment. Match the specific car’s model year, body style and named trim to its listing or factory build information. A 2008 G6 brochure groups equipment by model and body style, illustrating why those details matter, but it does not answer the 2009 1SA-versus-1SB question. View the 2008 G6 brochure.
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How to check a specific G6
- Identify the exact car. Record its VIN, model year, body style and trim; do not compare codes across different years or configurations as if they were interchangeable.
- Check its original window sticker or build information. Use the vehicle-specific record to confirm the factory equipment and option groups.
- Ask a GM/Pontiac parts or service department to identify the factory equipment. Provide the VIN and ask them to verify the car’s original build.
- Compare the actual equipment lists. If you are evaluating two cars, compare their year, body style, trim, engine, transmission and listed standard and optional equipment—not just the 1SA or 1SB code.
Why forum feature lists can mislead
The 2009 discussion that prompted the question describes 1SA and 1SB as option groups, but does not provide a sourced, definitive G6 equipment delta. A participant’s list of convenience features is anecdotal, not verified factory guidance. Treat such claims as leads to check against the individual car’s build record, not as proof that a feature comes with either code. Read the original discussion.
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