Buick Know How: LT1 Optispark (ABITS) Distributor Operation and Diagnostics @moldymac
Buick Know How: LT1 Optispark (ABITS) Distributor Operation and Diagnostics @moldymac
Uploaded January 2011 | Updated September 2026, 1 day ago
GM training video for the Optispark (ABITS) distributor system used on the LT1 and L99 engines.
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Buick Know How: LT1 Optispark (ABITS) Distributor Operation and Diagnostics

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