Chevy Suburban
Ford F-250
Grand Prix SE

What would cause an 89 suburban not hold a charge for any length of time and also possibly related a headlight buzzer that continues to sound after vehicle is started?



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It sounds like a short. The short will draw constant current from the battery even with the key off. I would look start looking for the short in the headlight harness, or better yet your headlight switch. If your battery has tested good, have your alternator tested for a current draw; this is a common problem. The alternator has power going to it regardless of the key position. Replace the headlight buzzer.