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 RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 387 (ENGINE CONTROL SYSTEM - SELF-DIAGNOSTICS - 4.2L)DIAGNOSTIC TESTSDTC P1516: COMMANDED VS. ACTUAL THROTTLE POSITION PERFORMANCE (TAC MODULE)ACTION TAKEN WHEN DTC SETS
2004 Oldsmobile Bravada RWD
Action Taken When DTC Sets
2004 Oldsmobile Bravada RWDSECTION Action Taken When DTC Sets
WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
- Control module illuminates the Malfunction Indicator Light (MIL) when the diagnostic runs and fails.
- Control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame and/or the Failure Records.
- Control module commands the TAC system to operate in the Reduced Engine Power mode; or, under certain conditions the control module commands the engine OFF.
- The message center displays Reduced Engine Power.
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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.