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 MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 460 (ENGINE CONTROLS - TROUBLE SHOOTING - NO CODES)SYMPTOMSPOOR FUEL ECONOMYSENSOR/SYSTEM
2004 Oldsmobile Bravada AWD
Poor Fuel Economy: Sensor/System
2004 Oldsmobile Bravada AWDSECTION Sensor/System
WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the air intake system and crankcase for air leaks.
- Inspect the crankcase ventilation valve for proper operation. Place a finger over the inlet hole in the valve end several times. The valve should snap back. If not, replace the valve.
- Inspect for an inaccurate speedometer. See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.
- Use a scan tool in order to monitor the Knock Sensor (KS).
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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.