Keyless Entry System: Overview Chevrolet TrailBlazer I

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Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

1. 2. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
2. 5. The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.

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Unlock All Doors-Second Operation

Momentarily press the UNLOCK button a second time (within 2 seconds of the first press) in order to perform the following functions

1. Unlock the remaining doors.
2. Illuminate the interior lamps for a predetermined amount of time or until the ignition is turned to the RUN position with a valid key.
3. Flash the exterior lights, if selected ON in personalization.
4. Chirp the horn, if selected ON in personalization.
5. Recall the memory seat and memory mirror positions for that driver.