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February 25th 2026

P1377 / CHEVROLET

IC Cam Pulse To 4X Reference Pulse

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February 25th 2026

P1377 / CADILLAC

IC Module CAM Pulse To 4X Reference Pulse Comparison

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February 25th 2026

P1377 / BUICK

IC Module CAM Pulse To 4X Reference Pulse Comparison

Notes:

February 25th 2026

P1377 / AUDI

Cyl. 8, ignition circuit Short Circuit to B+

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NOTE: Results from this database are the beginning of the diagnostic process, further investigation should be performed to confirm results before you begin repairs.