GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Pickup - 4WD 🢒 Engine 🢒 Engine Electrical 🢒 Charge Indicator Always On

Step

Action

Value(s)

Yes

No

1
  1. Turn OFF the engine.
  2. Disconnect the generator connector.
  3. Move the ignition switch to the RUN position.

Does the battery indicator light?

--

Go to Step 3

Go to Step 2

2

Repair or replace the generator. Refer to Generator Replacement .

Is the repair complete?

--

Go to Charging System Check

--

3
  1. Remove CKT 25 (BRN) from connector C100.
  2. Turn ignition switch to the RUN position.

Does the battery indicator light?

--

Go to Step 4

Go to Step 5

4

Locate and repair the short to ground in CKT 25 (BRN) between C100 and the battery indicator bulb. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Charging System Check

--

5

Locate and repair the short to ground in CKT 25 (BRN) between C100 and the generator. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Charging System Check

--