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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 109 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P1621: Pcm Long Term Memory Performance >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2002 Saturn LW200, 2002 Saturn L200, and 2002 Saturn L100. However, it is still accessible from the selected car via links, so may be relevant.

Reprogram PCM. If fault returns, replace and reprogram PCM.

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