Main Valve Body Assemble

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Locating Exhaust Pressure Regulator Valve & Spring

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Install the exhaust backfill valve (1) and the spring (2).

Fig 2: Compressing Exhaust Pressure Regulator Valve Spring

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Compress the exhaust backfill spring with J 43773 (2). See Special Tools .
Install the retaining clip (1). Ensure the retaining clip (1) is below the valve body surface.

Fig 3: Identifying Control Relief Spring & Control Relief Valve

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Install the control relief valve (1) and spring (2).

Fig 4: Compressing Control Relief Valve Spring

Courtesy of GENERAL MOTORS CORP.

Compress the control relief spring with J 43773 (2). See Special Tools .
Install the retaining clip (1). Ensure the retaining clip (1) is below the valve body surface.