GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 GMC C-Series Medium Duty Truck B7 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Daytime Running Lamps (DRL) Indicator Inoperative

Step

Action

Value(s)

Yes

No

1
  1. Set the parking brake.
  2. Observe the park brake indicator lamp.

Did the park brake indicator lamp light?

--

Go to Step 5

Go to Step 2

2
  1. Disconnect the driver information center harness connector.
  2. Connect a test lamp between terminal J (connector C1) in the driver information center harness connector and chassis ground.

Did the test lamp light?

--

Go to Step 3

Go to Step 4

3

Replace the driver information center.

Is the repair complete?

--

System OK

--

4

Locate and repair the open in CKT 39 (PNK) between S232 and terminal J in the driver information center harness connector.

Is the repair complete?

--

System OK

--

5
  1. Disconnect the driver information center harness connector.
  2. Connect a test light between terminal K in the driver information center harness connector and chassis ground.

Did the test lamp light?

--

Go to Step 7

Go to Step 6

6

Locate and repair the open in CKT 592 (LT GRN/BLK) between terminal K in the driver information center harness connector and terminal D2 in the daytime running light relay socket.

Is the repair complete?

--

System OK

--

7

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

System OK

--