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Home >> Cadillac >> 1999 >> Escalade >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Anti-Theft System - Escalade, Express, Pickup, SAVANA, TAHOE & YUKON DENALI) >> Diagnostic Tests >> DTC C0559: EEPROM Checksum Error >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2000 GMC Yukon, 2000 GMC Savana Special, 2000 GMC Savana Camper Special, 2000 GMC Savana, and 2000 GMC Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Turn ignition off. Replace Passlock™ module. See PASSLOCK™ MODULE  under REMOVAL & INSTALLATION. Reconnect all connectors and components. Turn ignition on. Using scan tool, clear all DTCs. Perform reprogramming procedure. See PROGRAMMING .

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