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.
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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 389 (KEYLESS ENTRY SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESKEYLESS ENTRY SYSTEM INOPERATIVE
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Keyless Entry System Inoperative
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Keyless Entry System Inoperative
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Keyless Entry System Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| 1 | Did you perform the Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Remote Keyless Entry |
| 2 | Press each button of the transmitter one at a time. Does the system operate normally? |
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Lock and unlock the door locks using the controls inside the vehicle. Do the locks operate properly? |
Go to Step 4 | Go to Diagnostic System Check - Door Systems in Doors |
| 4 |
IMPORTANT:
Inspect that the keyless entry transmitter is the correct model for the vehicle remote system. A wrong model transmitter may pass this test but will not activate the vehicle remote system.
|
Go to Step 8 | Go to Step 5 |
| 5 | Do any of the buttons on the transmitter sound the tone and illuminate the green light when pressed? | Go to Step 9 | Go to Step 6 |
| 6 | Replace the transmitter battery. Refer to Transmitter Battery Replacement . Did you complete the replacement? |
Go to Step 7 | - |
| 7 |
|
Go to Step 8 | Go to Step 9 |
| 8 | Perform the transmitter synchronization procedure. Refer to Transmitter Resynchronization . Did the locks cycle to lock then unlock? |
Go to Step 12 | Go to Step 10 |
| 9 | Replace the transmitter. Did you complete the replacement? |
Go to Step 10 | - |
| 10 | Perform the transmitter programming procedure. Refer to Transmitter Programming . Did the locks cycle to lock then unlock? |
Go to Step 12 | Go to Step 11 |
| 11 |
IMPORTANT:
When replacing the Passenger Door Module (PDM), perform the Program all Transmitters procedure. Refer to Transmitter Programming . Replace the PDM. Refer to Switch Replacement - Door Lock and Side Window - Passenger
in Doors.Did you complete the replacement? |
Go to Step 12 | - |
| 12 | 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.