GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the entire Interior Lights Dimming System Check performed?

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Go to Step 2

Go to Interior Lights Dimming System Check

2

  1. Disconnect the LH rear door module (LRDM) connector C1.
  2. Disconnect the LH rear power window switch connector.
  3. Disconnect the LH rear power door lock switch connector.
  4. Disconnect the LH rear heated seat switch connector (with KA1).
  5. Connect a DMM from the LRDM connector C1 cavity 20 (YEL/BLK) to ground.

Is the resistance less than the specified value?

0.5 ohms

Go to Step 6

Go to Step 3

3

Connect a DMM from the LRDM connector C1 cavity 20 (YEL/BLK) to the LH rear power window switch connector cavity 5 (YEL/BLK).

Is the resistance less than the specified value?

0.5 ohms

Go to Step 4

Go to Step 7

4

Connect a DMM from the LRDM connector C1 cavity 10 (TAN/WHT) to the LH rear power window switch connector cavity 4 (TAN/WHT).

Is the resistance less than the specified value?

0.5 ohms

Go to Step 5

Go to Step 8

5

Replace the LH rear door module (LRDM). Refer to Door Control Module Replacement in Doors.

Is the LRDM replacement complete?

--

Go to Interior Lights Dimming System Check

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6

Repair the short to ground in CKT 1491 (YEL) or (YEL/BLK). Refer to Wiring Repairs in Wiring Systems.

Is the circuit repair complete?

--

Go to Interior Lights Dimming System Check

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7

Repair the open in CKT 1491 (YEL) or (YEL/BLK) between the LRDM and S700. Refer to Wiring Repairs in Wiring Systems.

Is the circuit repair complete?

--

Go to Interior Lights Dimming System Check

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8

Repair the open in CKT 551 (TAN/WHT) between the LRDM and S701. Refer to Wiring Repairs in Wiring Systems.

Is the circuit repair complete?

--

Go to Interior Lights Dimming System Check

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