GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition switch to the RUN position.
  2. Backprobe the DRL On relay with a test lamp from terminal 86 to B+.

Did the test lamp light?

--

Go to Step 2

Go to Step 3

2

Replace the DRL On relay.

Is the repair complete?

--

System OK

--

3

Check for an open in CKT 740 (BRN) between the DRL On relay and splice pack 2.

Is there an open in the circuit?

--

Go to Step 4

Go to Step 5

4

Repair the open in CKT 740 (BRN) between the DRL On relay and splice pack 2.

Is the repair complete?

--

System OK

--

5

Refer to Engine Electrical.

Is the repair complete?

--

System OK

--