GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the DRL System Check?

--

Go to Step 2

Go to Daytime Running Lights (DRL) System Check

2

Remove the DRL relay from the fuse block.

Do the daytime running lamps remain on?

--

Go to Step 3

Go to Step 4

3

Locate and repair a short to ground in CKT 593 between the left headlamp assembly and the fuse block.

Did you complete the repair?

--

Go to Daytime Running Lights (DRL) System Check

--

4

Replace the DRL relay.

Did you complete the repair?

--

Go to Daytime Running Lights (DRL) System Check

--