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Home >> GMC >> 2000 >> Yukon Denali >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Self-Diagnostics - Gasoline - 4.8L, 5.3L & 6.0L >> Diagnostic Tests >> DTC P0602: Control Module Not Programmed >> Circuit Description
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Circuit Description

This DTC indicates that PCM's internal Electronically Erasable Programmable Read Only Memory (EEPROM) has not been flashed with any vehicle software. If a replacement PCM is installed and not flashed, engine will not run. This DTC is used to indicate that engine cranks, but will not run due to an unflashed PCM. DTC will set when there is no software data present in the PCM.

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