GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 Engine 🢒 Engine Electrical 🢒 CARGO LAMP Warning Not Operating Properly

Step

Action

Value(s)

Yes

No

1

Was the instrument panel cluster (IPC) system check performed?

--

Go to Step 2

Go to Instrument Cluster System Check

2
  1. Turn the ignition switch to the ON position.
  2. With a scan tool select IPC, Special Functions, and command the Cargo Lamp On message ON.

Does the Cargo Lamp On message turn ON and OFF when commanded?

--

Go to Diagnostic System Check - Body Control System

Go to Step 3

3

Replace the IPC. Refer to Instrument Cluster Replacement

Is the repair complete?

--

Go to Instrument Cluster System Check

--