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    TCS Relay, 1970-75 Chevelle/El Camino/Skylark/Cutlass/MC

    Vehicle Specific fits 8 models
    0 Reviews
    Part# CH28222
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    TCS Relay, 1970-75 Chevelle/El Camino/Skylark/Cutlass/MC

    This reproduction relay is identical to original equipment and is a must-have for any 4-speed vehicle. The relay works with the Transmission Controlled Spark (TCS) switch to advance the engine timing when the transmission is in top-gear, which provides better fuel economy. The original style relay is stamped with the original GM part number on its zinc-plated metal top and also features a plastic body equipped with the correct four-prong configuration. Sold per each.


    WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

    Vehicle Fitment

    Make & Model Year Range Application Details
    Buick Skylark 70-72
    Chevrolet Chevelle 70-75
    Chevrolet El Camino 70-75
    Chevrolet Monte Carlo 70-75
    Oldsmobile Cutlass 70-75
    Pontiac GTO 70-73
    Pontiac LeMans 70-73
    Pontiac Tempest 70-73
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    TCS Relay, 1970-75 Chevelle/El Camino/Skylark/Cutlass/MC
    TCS Relay, 1970-75 Chevelle/El Camino/Skylark/Cutlass/MC