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.
2007 Hummer H3 L5-3.7LFACTORY OEM SERVICE PROCEDURE
Manifold Pressure/Vacuum Sensor: Service and Repair
Manifold Absolute Pressure Sensor Replacement
Removal Procedure
1. Disconnect the manifold absolute pressure (MAP) sensor electrical connector (3).
2. Press the retainer locking tabs inward, then pull the retainer (1) up to remove.
3. Remove the MAP sensor (2) from the intake manifold (3).
4. Inspect the MAP sensor seal for damage, and replace as necessary.
Installation Procedure
1. Lightly lubricate the MAP sensor seal with clean engine oil, to aid in installation.
2. Install the MAP sensor (2) into the intake manifold (3).
3. Install the MAP sensor retainer (1).
4. Connect the MAP sensor electrical connector (3).
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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