Headlamps Inoperative in Low Light Conditions. Chevrolet S10 Pickup

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2001 🢒 S10 Pickup - 4WD 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Headlamps Inoperative in Low Light Conditions

Step

Action

Yes

Did you perform the Lighting Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

Verify that the headlamps are inoperative in low light conditions.

Do the headlamps operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

Turn the headlamp switch to the HEAD position.

Do the headlamps operate normally?

Go to Step 4

Go to Headlamps Inoperative - Low Beams

Use the Scan Tool to inspect for the following related Body Control Module (BCM) Data/ Input Parameters and Output Controls. Refer to Scan Tool Data List for typical values and definitions:

•	Headlamp ambient light sensor

•	Auto headlamps

•	Headlamp relay feedback

•	Daytime running lamps relay

•	Headlamp power relay

•	High beam switch

•	Flash-to-Pass switch

Did you find and correct a problem?

Go to Step 5

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3