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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1778 (HVAC SYSTEM - AUTOMATIC)DIAGNOSTIC INFORMATION AND PROCEDURESSTEERING WHEEL CONTROLS INOPERATIVE
2004 Oldsmobile Bravada AWD

Steering Wheel Controls Inoperative

2004 Oldsmobile Bravada AWDSECTION Steering Wheel Controls Inoperative
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2005 Isuzu Ascender, 2005 GMC Envoy XUV, 2005 GMC Envoy XL, 2005 GMC Envoy, and 2005 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Steering Wheel Controls Inoperative

Step Action Values Yes No
Schematic Reference: HVAC Schematics 
Connector End View Reference: HVAC Connector End Views 
DEFINITION: The left steering wheel control does not operate properly.
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
  1. With a scan tool, observe the SWC Switch Voltage parameter in the Body Control Module (BCM) data list.
  2. Activate each of the left steering wheel control switches.
Does the scan tool indicate that the value of the SWC Switch Voltage parameter changes when each switch is activated?		 - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3
    CAUTION: Refer to SIR Caution in Cautions and Notices.
  1. Disable the SIR system. Refer to SIR Disabling and Enabling Zones in SIR.
  2. Turn the ignition OFF.
  3. Disconnect the left steering wheel controls.
  4. Turn ON the ignition, with the engine OFF.
  5. With a scan tool observe the SWC Switch Voltage parameter.
  6. Connect a 3-amp fused jumper wire between the supply voltage circuit of the left steering wheel controls and the signal circuit of the remote blower motor switch.
Does the scan tool indicate that the value of the SWC Switch Voltage parameter changes?		 - Go to Step 4  Go to Step 5 
4
  1. Disconnect the fused jumper wire.
  2. With a scan tool observe the SWC Switch Voltage parameter.
  3. Connect a 3-amp fused jumper wire between the supply voltage circuit of the left steering wheel controls and the signal circuit of the remote air temperature switch.
Does the scan tool indicate that the value of the SWC Switch Voltage parameter changes?		 - Go to Step 10  Go to Step 9 
5 Measure the voltage from the supply voltage circuit of the left steering wheel controls to a good ground.
Does the voltage measure greater than the specified value?		 10 V Go to Step 9  Go to Step 6 
6 Measure the voltage from the supply voltage circuit of the right steering wheel controls to a good ground.
Does the voltage measure greater than the specified value?		 10 V Go to Step 7  Go to Step 8 
7 Test the supply voltage circuit of the left steering wheel controls for a short to ground, a high resistance or an open. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 16  Go to Step 11 
8 Test the supply voltage circuit of the right steering wheel controls for a short to ground, a high resistance or an open. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 16  Go to Step 12 
9 Test the signal circuit of the left steering wheel controls for a short to ground, a high resistance or an open. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 16  Go to Step 12 
10 Inspect for poor connections at the harness connector of the left steering wheel controls. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 16  Go to Step 13 
11 Inspect for poor connections at the harness connector of the right steering wheel controls. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 16  Go to Step 14 
12 Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 16  Go to Step 15 
13 Replace the left steering wheel control switch. Refer to Steering Wheel Control Switch Assembly Replacement in Steering Wheel and Column.
Did you complete the replacement?		 - Go to Step 16  -
14 Replace the right steering wheel control switch. Refer to Steering Wheel Control Switch Assembly Replacement in Steering Wheel and Column.
Did you complete the replacement?		 - Go to Step 16  -
15 Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?		 - Go to Step 16  -
16 Operate the system in order to verify the repair.
Did you correct the condition?		 - System OK Go to Step 3 
RENDER: 1.0x

NO RELATED

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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.