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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Antilock Brake System) >> Diagnostic Information And Procedures >> DTC C0274, C0275 Or C0280: Isolation Valve High Temperature/Dump Valve High Temperature/Stability System Active Too Long >> Circuit/System Description

Circuit/System Description

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The solenoid valves are integral parts of the brake pressure modulator. The brake pressure modulator contains an isolation solenoid valve and a dump solenoid valve for each wheel. A traction/stability control supply solenoid valve and a isolation solenoid valve for each brake circuit. The solenoid valves are not engaged during normal system operation. When the ABS, the traction control or the stability control operation is required the electronic brake control module turns the required solenoid ON.

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