Two catalytic converters.
The 2009 Pontiac G6 was offered with two engine options and commonly uses a dual-exhaust layout that includes two catalytic converters, one for each bank of the engine. This arrangement is typical for both the 2.4L four-cylinder and the 3.5L V6 in that model year. Exact placement can vary by configuration or aftermarket modifications, so it’s best to verify on a specific vehicle using the VIN or service documentation.
Engine configurations and typical exhaust layout
Most 2009 G6s employ two catalytic converters, one on each bank of the engine, paired with a dual-exhaust system. While the precise layout can differ between the 2.4L inline-4 and the 3.5L V6, the two-cat configuration is a common feature for that year.
- 2.4L inline-4 engine (Ecotec): Typically features two catalytic converters, one close to the manifold and a second downstream to meet emissions standards.
- 3.5L V6 engine: Also commonly configured with two catalytic converters, one for each exhaust bank, before the exhaust merges into the rear system.
Note: Some models or aftermarket modifications can alter the count or placement. Always verify by inspecting the exhaust system or consulting the service literature for your specific vehicle.
Verification steps
To confirm the exact number on a given car, you can:
- Inspect under the vehicle for two distinct converter canisters in the exhaust lines.
- Check the vehicle’s VIN and build sheet or service manual for emissions equipment specifications.
- Ask a certified mechanic or refer to GM documentation for the 2009 G6’s exact configuration by engine code.
In practice, owners replacing exhaust components often service both converters at once to maintain emissions performance and avoid compatibility issues.
Summary
For the 2009 Pontiac G6, the typical configuration includes two catalytic converters—one on each bank of the engine—across the common engine options of the year. Verify the exact setup on your specific vehicle to account for any variations or aftermarket modifications.