Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN K1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 35 (ENGINE CONTROL SYSTEM - SYSTEM & COMPONENT TESTING)AIR INDUCTION SYSTEMSAUXILIARY INTAKE AIR SYSTEMAUXILIARY INTAKE AIR DOOR INSPECTION
2006 Chevrolet Suburban K1500, 5.3 Z
Auxiliary Intake Air Door Inspection
2006 Chevrolet Suburban K1500, 5.3 ZSECTION Auxiliary Intake Air Door Inspection
WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
- To view the operation of the auxiliary intake air door, remove the air cleaner cover and air cleaner element.
- Verify auxiliary intake air door is OPEN.
- If the intake air door is closed test for a faulty intake air control solenoid.
- Disconnect the vacuum hose to the auxiliary intake air door motor.
- Check if auxiliary intake air door is OPEN.
- Replace the air cleaner assembly if the intake air door is closed.
- Connect the Hand Vacuum Pump (J 23738-A), or equivalent, to the intake air door motor.
- Apply a vacuum of 10 in. Hg to the intake air door motor.
- The intake air door motor should CLOSE and HOLD vacuum.
- Replace the air cleaner assembly if the intake air door fails the previous test.
- Connect the hand vacuum pump to the vacuum storage chamber on the air cleaner upper assembly.
- Apply a vacuum of 10 in. Hg to the storage chamber.
- The vacuum chamber should HOLD the vacuum pressure.
- Replace the air cleaner assembly if the vacuum storage chamber looses pressure.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.