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Action Taken When the DTC Sets The PCM stores DTC P0563 in the PCM memory when the diagnostic runs and fails. The PCM will record the operating conditions at the time the diagnostic fails. The PCM The PCM disables most outputs. The transmission defaults to a predetermined gear. The torque converter clutch (TCC) operation is inhibited. The instrument panel cluster (IPC) displays a message. The malfunction indicator lamp (MIL) will not illuminate. Conditions for Clearing the DTC The Conditions for Setting the DTC are no longer present. A history DTC will clear after 40 malfunction-free ignition cycles. The PCM receives the clear code command from the scan tool. DTC P0563 Step Action Values Yes No Schematic Reference: Starting and Charging Schematics 1 Did you perform the Diagnostic - Go to Step 2 Go to 2 1. Turn OFF all the accessories. 2. Measure the battery voltage at the battery using the DMM. 3. Operate the engine speed above 2,000 RPM. Is the battery voltage less than the 19 V Go to Step 4 Go to Step 3 3 Replace the generator. Refer to - Go to Step 5 -
2007 Hummer H3 2007 ENGINE Engine Electrical - H3
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