High Beam Indicator Inoperative. GMC Truck GMC C-Series Medium Duty Truck B7 2001

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC C-Series Medium Duty Truck B7 🢒 Body and Accessories 🢒 Lighting Systems 🢒 High Beam Indicator Inoperative

Step	Action	Yes	No
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics
1	Did you review the headlamps description and operation and perform the necessary inspections?	Go to Step 2	Go to Symptoms - Lighting Systems
2	Place the headlamp switch in the HEADLAMP position. Place the headlamp dimmer switch in the HIGH position. Does the high beam indicator illuminate?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	Place the headlamp switch in the OFF position. Disconnect the instrument panel cluster connector. Probe the headlamp high beam supply voltage circuit of the high beam indicator with a test lamp that is connected to a good ground. Place the headlamp switch in the HEADLAMP position. Does the test lamp illuminate?	Go to Step 4	Go to Step 7
4	Connect the test lamp between the headlamp high beam supply voltage circuit of the high beam indicator and the high beam indicator ground circuit. Does the test lamp illuminate?	Go to Step 5	Go to Step 8
5	Inspect the high beam indicator bulb for an open filament or poor connection. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 10	Go to Step 6
6	Inspect for poor connections at the harness connector of the instrument panel cluster. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 10	Go to Step 9
7	Repair an open, high resistance, or short to ground on the headlamp high beam supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 10	--
8	Repair an open or high resistance in the high beam indicator ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair?	Go to Step 10	--
9	Replace the instrument panel cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console. Did you complete the replacement?	Go to Step 10	--
10	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 3