Daytime Running Lamps (DRL) May Not Work or DRL Indicator on IP Cluster Flashes and Then Goes Out, DTC B2600 (Insepct DRL Resistor and Replace, If Necessary)

This bulletin is being revised to update the models affected, change the procedure and Parts Information. Please discard Corporate Bulletin Number 07-08-42-002 (Section 08 -- Body and Accessories).

Important: This bulletin applies to vehicles sold and registered in the U.S. ONLY. Vehicles sold and registered in Canada should refer to Special Coverage Bulletin 08050.

Some customers may comment that the daytime running lamps (DRL) may not work or that the DRL indicator on the IP cluster flashes and then goes out. A technician may find DTC B2600 (Daytime Running Lamp Control Circuit) set.

The DRL resistor may be cracked.

Inspect the DRL resistor using the steps below.

1. Verify that the daytime running lamps are not illuminated by following the steps below:

1.1.	Park the vehicle outside or hold a shop" trouble" light over the ambient light sensor for 30 seconds.

1.2.	Position the headlamp switch to the "Auto" position.

1.3.	Make sure the parking brake is not applied or set.

1.4.	Depress the brake pedal.

1.5.	Turn the ignition key to the "ON" position.

1.6.	Shift the transmission out of "Park" position or place the vehicle into gear if equipped with a manual transmission.

1.7.	Visually watch the green DRL telltale lamp on the IP cluster and note the operation of the DRL lamps.

•	If the DRL telltale lamp stays on and both DRL lamps are on, then the DRLs are functioning properly. No further action is required.

•	If the DRL telltale flashes rapidly, goes out and one DRL lamp flashes rapidly, a DRL bulb may be burned out. Inspect the DRL bulb and replace if necessary.

•	If the DRL telltale flashes rapidly, goes out and no DRL lamps come on, then proceed to the next step.

1.8.	Check for DTCs and verify DTC B2600-Daytime Running Lamp Control Circuit is present.

2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI.

2007 Saturn Model shown





Tip
The DRL resistor (1) is located on the left front bumper support and may require cleaning before inspection.

3. For Chevrolet and Pontiac models, loosen the left front corner of the inner wheel liner to front fascia to gain access to the DRL resistor. Refer to Front Wheelhouse Liner Replacement in SI. Saturn models do not require the removal of the left front wheel or inner wheel liner to gain access to the DRL resistor (1). Proceed to Step 4.
4. Use a mirror and light to visually inspect the daytime running lamps resistor for cracks or corrosion.

4.1.	If the resistor is cracked or corroded, remove the resistor. Refer to Daytime Running Lamps (DRL) Resistor Replacement in SI. Proceed to Step 5.

4.2.	If the resistor appears to be in good condition, follow normal SI diagnostics.

•	If DTC B2600 is set, refer to DTC B2600 in SI.

•	If no codes were set, refer to Daytime Running Lamps (DRL) Inoperative in SI.




5. Install the new DRL resistor assembly to the left front bumper support with the washer (1) between the resistor and bumper support.
6. Tighten the new DRL resistor bolt.

Tighten
Tighten the bolt to 6 N·m (53 lb in). DO NOT EXCEED 6 N·m (53 lb in).

7. Connect the DRL electrical connector to the DRL resistor.
8. For Chevrolet and Pontiac models, install the left front corner of the inner wheel liner to front fascia. Refer to Front Wheelhouse Liner Replacement in SI. Saturn models did not require the inner wheel liner to be removed. Proceed to Step 9.
9. Lower the vehicle and unhoist.
10. Clear any DTCs and verify the operation of the daytime running lamps.

For vehicles repaired under warranty, use: