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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1866 (ENGINE EXHAUST SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESRESTRICTED EXHAUSTTEST METHOD
2004 Oldsmobile Bravada RWD

Test Method

2004 Oldsmobile Bravada RWDSECTION Test Method
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Exhaust System
    GM894148Courtesy of GENERAL MOTORS CORP.
  1. Remove the oxygen sensor.
  2. Connect the gage bar tool kit SA9127E  0-60 in H2O.
  3. With the engine at normal operation temperature, observe the exhaust back pressure at constant 4,000 RPM for 5 seconds.
  4. Back pressure must be less than 20.13 in H2O (5.0 kPa).
    5. IMPORTANT: If the exhaust pressure exceeds specification, inspect for dents/obstructions. It may be necessary to disconnect the muffler or the pipe before or behind the converter and repeat the test.
  5. Replace the damaged or defective parts.
  6. Remove the test equipment.
    7. IMPORTANT: Use non-silicon anti-seize compound on the threads. It may be necessary to use a scan tool to delete any codes set while performing the pressure test.
RENDER: 1.0x

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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.