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Home >> Oldsmobile >> 2004 >> Bravada RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 456 (Engine Control System - Self-Diagnostics - 5.3L) >> Diagnostic Tests >> Notes
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Diagnostic Tests: Notes

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Before clearing DTCs, perform powertrain diagnostic system check. See DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS  under SELF-DIAGNOSTIC SYSTEM. Record FREEZE FRAME and FAILURE RECORDS for reference during testing. Data will be erased when DTCs are cleared. If PCM is replaced, NEW PCM must be programmed using special manufacturer's equipment. See POWERTRAIN CONTROL MODULE  under PROGRAMMING.
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