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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1134 (ENGINE COOLING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESSCAN TOOL OUTPUT CONTROLS
2004 Oldsmobile Bravada RWD
Scan Tool Output Controls
2004 Oldsmobile Bravada RWDSECTION Scan Tool Output Controls
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
Powertrain Control Module (PCM) 3.4 Liter LA1 Scan Tool Output Control
| Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
| Fans Low Speed | Fan Relays | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the powertrain control module (PCM) and activate or deactivate the cooling fan 1 relay, manually turning the low speed fans On and Off. |
| Fans High Speed | Fan Relays | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the PCM to activate or deactivate the cooling fan 1 relay, manually turning the low speed fans On. After a 3 second delay the PCM will activate the cooling fan 2 relay and the cooling fan 3 relay. This turns the high speed fans On and Off. |
Engine Control Module (ECM) 3.6L LY7 Scan Tool Output Control
| Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
| Fan Relay 1 | Fan Relays | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the electronic control module (ECM) and activate or deactivate the cooling fan 1 relay, manually turning the low speed fans On and Off. |
| Fan Relays 2 and 3 | Fan Relays | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the ECM to activate or deactivate the cooling fan 2 and 3 relays, manually turning the medium speed fans On. |
| Fan Relays 1, 2 and 3 | Fan Relays | The scan tool displays a Commanded State of None, Off or On. This allows you to communicate with the ECM to activate or deactivate the cooling fan 1, 2 and 3 relays, manually turning the high speed fans On. |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.