Car

Use an inexpensive digital voltmeter to measure battery voltage while the engine is running. It must be between 13.75 and 14.75 volts. Starting with the 1987 models GM went from the world's second best DC generator to by far the worst pile ever. It is common to go through four to six of them in the life of the vehicle and they are extremely difficult to disassemble to repair, assuming you know what's wrong with it.

What many professionals are finding out is to reduce the number of repeat failures, replace the perfectly good battery at the same time, which you already did. It will work fine in older vehicles, but as they age they lose their ability to absorb the huge voltage spikes these generators produce. Those spikes can destroy the diodes inside the generator and they interfere with the signals from various engine sensors.

U got a draw something is staying on like ant, trunkpulldown motor, int. Lights. U can remove neg. Battery cable when not using car to stop it. Ck my profile good luck