SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 997 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESSPEAKERS INOPERATIVE - ONE OR MORECIRCUIT/SYSTEM TESTING
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Circuit/System Testing

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Circuit/System Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Center the balance and fade adjustment on the radio.
    • If adjustment of the fade and balance eliminates the concern, review the operation of the radio with the customer.
  2. Listen to the audio using a normal radio frequency and then a digital radio frequency, listen for any inoperative speakers. If speakers only become inoperative when using the digital radio, disconnect C2 harness connector from the radio. Verify there is AC voltage present on the suspect audio signal channel.
    • If AC voltage is not present test for an open, short to ground or short to power on the suspect remote radio audio signal circuit between the radio and the digital radio receiver (DRR). If all circuits test normal, replace the DRR.
    • If AC voltage is present, replace the radio.
    3. IMPORTANT: If the vehicle is not equipped with an amplifier skip step 3 and 4.
  3. Disconnect the harness connector at the amplifier that contains the suspect inoperative speaker inputs. If the suspect speaker inputs are contained in the same harness as the amplifier power and ground It will be required to re-connect the power and ground by using a jumper harness.  Connect a DMM between the suspect low level audio signal circuits. With the scan tool, perform the radio tone test on the suspect speaker and verify there is an AC voltage and not DC 12 V.
    • If the suspect speaker low level audio signal AC voltage is 0 V AC or 12 V DC, test or repair open, short to ground or short to power on the suspect speaker channel low level audio signal circuits. If a open, short to ground or a short to power can not be found, replace the radio.
  4. Reconnect the amplifier harness connector.
  5. Disconnect the harness connector of the suspect speaker. Connect a DMM to between the suspect speaker signal circuits at the speaker harness connector. With the scan tool, perform the amplifier tone test on the suspect speaker channel and record the AC and DC voltage. Verify there is an AC voltage and not DC 12 V.
    • If the suspect channel speaker signal AC voltage is 0 AC or 12 V DC, test or repair open, short to ground or short to power on the suspect speaker channel signal circuits. If a open, short to ground or a short to power can not be found, replace the amplifier if equipped. Replace the radio if not equipped with an amplifier.
    • If the suspect speaker channel signal circuits test normal, Replace the suspect speaker.
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.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.