For 1990-2009 cars

Important: The following steps must be completed before using the symptom tables.

1. Perform the Diagnostic System Check - Vehicle in Vehicle DTC Information before using the symptom tables in order to verify that all of the following are true:

• | No DTC is set.

• | The ability of the control module to communicate through GMLAN serial data.

2. Review the system description and operation in order to familiarize yourself with the system functions. Refer to the following:

• | Power Windows Description and Operation

• | Power Door Latch Description and Operation

• | Power Door Locks Description and Operation

• | Door Ajar Indicator Description and Operation

• | Outside Mirror Description and Operation

### Visual/Physical Inspection

• | Inspect for aftermarket devices which could affect the operation of the power windows, power door locks, or power mirrors. Refer to Checking Aftermarket Accessories .

• | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

### Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

### Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

• | Power Windows Inoperative - All

• | Power Window Express Up Function Inoperative

• | Power Window Lockout Function Inoperative

• | Power Window Inoperative from Master Switch

• | Power Window Inoperative - Passenger Door

• | Door Ajar Indicator Malfunction

• | Power Door Latch Inoperative - Driver Door

• | Power Door Latch Inoperative - Passenger Door

• | Power Door Locks Inoperative

• | Power Door Lock Key Cylinder Switches Inoperative

• | Power Door Locks Inoperative - Deadbolt

• | Automatic Door Locks Inoperative

• | Power Mirrors Inoperative

• | Power Mirror Folding Inoperative

• | Outside Mirrors Automatic Day-Night Feature Inoperative

• | Power Mirror Tilt Inoperative in Reverse

• | Heated Mirrors Inoperative - One