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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN PASSENGER EXTENDED, 5.0 MREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 928 (ENTERTAINMENT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESSTEERING WHEEL CONTROLS MALFUNCTION
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 M

Steering Wheel Controls Malfunction

2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 MSECTION Steering Wheel Controls Malfunction
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2001 GMC Yukon XL, 2001 GMC Yukon, 2001 GMC Sierra, 2001 GMC Cab & Chassis Sierra, and 2001 GMC C3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Steering Wheel Controls Malfunction

Step Action Value(s) Yes No
Schematic Reference: Radio/Audio System Schematics (Up Level Crew Cab) , Radio/Audio System Schematics (Steering Wheel Controls) , Radio/Audio System Schematics (Base Crew Cab) , Radio/Audio System Schematics (Luxury) , Radio/Audio System Schematics (Up Level Pickup) , Radio/Audio System Schematics (Up Level Utilities (w/RSA)) , Radio/Audio System Schematics (Up Level Utilities (w/o RSA)) , Radio/Audio System Schematics (Base Pickup) , Radio/Audio System Schematics (Base Utilities) 
1 Did you review the Radio/Audio System Description and Operation and perform the necessary inspections? - Go to Step 2  Go to Radio/Audio System Description and Operation 
2
  1. Turn ON the ignition, with the engine OFF.
  2. Operate the radio using the steering wheel controls (SWC).
Does the radio operate normally with the steering wheel controls?		 - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3
CAUTION:

When you are performing service on or near the SIR components or the SIR wiring, you must disable the SIR system. Refer to Disabling the SIR System. Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SIR system repairs.

  1. Disable the SIR. Refer to Disabling the SIR System in SIR.
  2. Remove the SIR assembly to expose the SWC connector.
  3. Turn ON the ignition, with the engine OFF.
  4. Test the RAP fuse supply voltage circuit of the SWC connector for an open.
Did you find and correct the condition?		 - Go to Step 10  Go to Step 4 
4
  1. Turn OFF the ignition.
  2. Measure the resistance between the RAP fuse supply voltage circuit and the steering wheel controls signal circuit of the SWC connector attached to the SWC switches.
  3. Depress the following steering controls and record the resistance values.
    • Volume Up
    • Volume Down
    • Mute
    • Seek Up
    • Seek Down
    • Preset
Do the recorded values measure near the specified values?		 1270 Ω
294 Ω
823 Ω
715 Ω
1180 Ω
9350 Ω		 Go to Step 5  Go to Step 7 
5
  1. Turn OFF the ignition.
  2. Disconnect the radio.
  3. Test the steering wheel controls signal circuit for a short, high resistance or an open.
Did you find and correct the condition?		 - Go to Step 10  Go to Step 6 
6 Inspect for poor connections at the harness connector of the radio. Refer to Testing for Intermittent Conditions and Poor Connections , and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 10  Go to Step 9 
7 Inspect for poor connections at the harness connector of the steering wheel radio controls. Refer to Testing for Intermittent Conditions and Poor Connections , and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 10  Go to Step 8 
8 Replace the appropriate SWC switch. Refer to Steering Wheel Control Switches Replacement .
Did you complete the replacement?		 - Go to Step 10  -
9 Replace the radio. Refer to Radio Replacement .
Did you complete the replacement?		 - Go to Step 10  -
10 Operate the system in order to verify the repair.
Did you correct the condition?		 - System OK Go to Step 2 
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.