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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 228 (Exhaust System) >> Diagnostic Information and Procedures >> DTC P26C5: Exhaust Flow Control Valve Control Circuit >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

The exhaust flow control system consists of two sound quality valves installed in the low restriction exhaust path of a duel outlet muffler near the exhaust tip. The exhaust flow control system is used to tune the exhaust note.

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