GM 6.5L V8 – Electrical Systems – Cranking/Charging Systems Batteries – Batteries

The vehicle electrical systems use two 12-volt batteries connected in parallel to provide a cold cranking current of 1140 amperes at 0° F (-18° C).

Figures 8-4 and 8-5 show battery cable routing. The left battery connects with the right battery (+ terminal) and engine (- terminal). The right battery connects to the cranking motor (+ terminal), which also connects to the power distribution junction block on the vehicle cowl. The right battery also connects to the engine and vehicle sheet metal (- terminal). The engine and vehicle sheet metal connect with a strap-type ground cable.


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