Number of cats.

[duckman18]

I have an 07 Silverado new body style with the 5.3. Can't figure out if this model has 2 cats or 3 with one further down stream any help would be appreciated

[MikeNH]

Have you been underneath? You should have one off of each manifold. From there you'll have to look.

[duckman18]

I finally got the chance too look looks like there's third

[xelli]

I have one cat.