2005 Chevrolet Trailblazer Q&A
2005 Chevrolet Trailblazer Question: what is causing my exhaust manifold to crack?
High heat would cause the manifold to crack. Is the vehicle running lean? Any DTC's? How's the vehicle run? How is fuel economy? Does the exhaust smell funny? - tires too
Low quality part, incorrect torque/sequence or improper gasket is my guess. Crack at the same place each time? Is the rest of the exhaust system secured properly? - pushrod