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.
2007 Chevrolet Express 1500 RWD V6-4.3LFACTORY OEM SERVICE PROCEDURE
Symptoms - Remote Functions
Symptoms - Remote Functions
Important: The following steps must be completed before using the symptom tables.
1. Perform Diagnostic System Check - Vehicle, before using the Symptom Tables in order to verify that all of the following are true:
* There are no DTCs set.
* The control modules can communicate via the serial data link. Initial Inspection and Diagnostic Overview
2. Review the system operation in order to familiarize yourself with the system functions. Refer to Keyless Entry System Description and Operation.
Visual/Physical Inspection
* Inspect for aftermarket devices which could affect the operation of the Keyless Entry System.
* Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
* Inspect that the transmitter is the correct model for the vehicle. An incorrect model will not operate the keyless entry system.
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Diagnostic Aids. Component Tests and General Diagnostics
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
* Keyless Entry System Inoperative
* Door Unlock Function Inoperative with Transmitter
* Door Lock Function Inoperative with Transmitter
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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