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

--

Go to Step 2

Go to Instrument Cluster System Check

1. Turn the ignition switch to the ON position.
2. With a scan tool select Instrument Panel Cluster, Special Functions, and Lamp Test.
3. command the Upshift lamp ON.

Does the Upshift lamp turn ON and OFF when commanded?

--

Go to Powertrain On Board Diagnostic (OBD) System Check for 4.3L

or Powertrain On Board Diagnostic (OBD) System Check for 4.8L, 5.3L, and 6.0L

Go to Step 3

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

Go to Instrument Cluster System Check

--