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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 28 (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESCHARGE INDICATOR ALWAYS ON
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Charge Indicator Always On

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Charge Indicator Always On
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.
Charge Indicator Always On

Step Action Value(s) Yes No
Schematic Reference: Starting and Charging Schematics 
Connector End View Reference: Engine Electrical Connector End Views , Engine Controls Connector End Views
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Start the engine.
  2. Turn OFF all accessories.
Does the battery charge indicator remain illuminated?		 - Go to Step 3  Go to Testing for Intermittent Conditions and Poor Connections
3
  1. Install a scan tool.
  2. Start the engine.
  3. Turn OFF all accessories.
  4. Increase engine speed to 1,500 RPM.
  5. With a scan tool, observe the Battery Voltage parameter in the body control module (BCM) data list, engine control module (ECM) data list, and the instrument panel cluster (IPC) data list.
  6. Compare the voltages.
Are all of the voltages within the specified range?		 0.9-1.1 V Go to Step 4  Go to Step 5 
4 Are the voltages displayed within the specified range? 11-16 V Go to Step 5  Go to Charging System Test 
5 Test the battery positive voltage and ground circuits of the affected module for a high resistance or open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 8  Go to Step 6 
6 Inspect for poor connections at the harness connector of the affected module. Refer to Connector Repairs .
Did you find and correct the condition?		 - Go to Step 8  Go to Step 7 
7 Replace the affected module. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?		 - Go to Step 8  -
8 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.