Chevrolet Blazer check engine light due to secondary air injection pump failure with potential catalytic converter damage on Chevrolet Blazer

Some Chevrolet Blazer owners report experiencing issues related to secondary air injection pump failure, which can illuminate the check engine light and potentially lead to catalytic converter damage. Symptoms of this failure include a rough idle and the activation of the check engine light, indicating a malfunction in the secondary air injection system. When diagnosed, the P0410 code may be set, prompting an inspection of the secondary air injection pump, relay, wiring, and connectors for any signs of damage. If a faulty pump is identified, it should be replaced, blockages cleared, and the check engine light reset to prevent further complications. Prompt attention to these issues is crucial for maintaining the vehicle's proper functioning and preventing additional damage.