GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the instrument cluster diagnostic system check?

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Go to Step 2

Go to Instrument Cluster System Check

2

  1. Turn the ignition switch to OFF
  2. Close all the vehicle doors
  3. Turn the ignition switch to ON
  4. Is one or more door ajar warning Indicators illuminated?

--

Go to Step 3

System OK

3

Disconnect the power side connector of the door ajar indicator switch that is illuminated

Does the indicator go out?

--

Go to Step 5

Go to Step 4

4

Inspect for short to ground on power side of door ajar indicator switch.

Was a short to ground found?

--

Go to Step 7

Go to Step 6

5

Replace the door ajar indicator switch.

Refer to Front Side Door Lock Replacement or Rear Door Lock Replacement

Is the repair complete?

--

Go to Step 7

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6

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

Go to Step 7

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7

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 2