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 106 (ENGINE CONTROLS SELF-DIAGNOSTICS - 6.5L)PROGRAMMINGGLOW PLUG SYSTEM RELEARN PROCEDURE

2004 Oldsmobile Bravada AWD

Glow Plug System Relearn Procedure

2004 Oldsmobile Bravada AWDSECTION Glow Plug System Relearn Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The vehicle must be in operating condition before performing this procedure.

The glow plug system type learn is used to identify the correct system type (Federal or California). The scan tool will display Federal, California or Not Learned (Engine Data List). The glow plug system type needs to be relearned when a new calibration has been flash programmed in to the PCM. The relearn procedure does not need to be done to a glow plug system type after a PCM has been replaced. The new PCM has the ability to perform an auto learn when system is not present. The Not Learned message will display on scan tool. If a system type has not been relearned after the PCM has been flashed, a DTC P0380 will set.

Turn ON the ignition, with the engine OFF.
Use the scan tool in order to select Special Functions, Engine Output Functions and Glow Plug System Learn.
Activate the Glow Plug System Learn by selecting ON. After the learn function has been preformed, Not Learned will display on the scan tool. In this step the scan tool is clearing the system type.
Use the scan tool in order to select the Special Functions menu, and select Glow Plug.
Activate the Glow Plug system by selecting ON. In this step the glow plug relay is now sending the identifying (signature) voltage to the PCM.
The PCM will now be able to identify the correct glow plug system type. For visual verification of the glow plug system, see COMPONENT LOCATIONS .
Clear the DTC P0380.
Allow the PCM to power down for at least 45 seconds.
Turn ON the ignition leaving the engine OFF. Use the scan tool in order to verify that DTC P0380 has not reset.
If DTC P0380 reset, perform the following procedure:
- Check the connections at the glow plug relay.
- Try again to relearn the glow plug system. If the relearn fails again, see DTC P0380: GLOW PLUG CIRCUIT PERFORMANCE (CA) or DTC P0380: GLOW PLUG CIRCUIT PERFORMANCE (FED) .

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.