A power supply to keep the system voltage consistent is a required piece of equipment to perform a reflash procedure.
Andrew Markel discusses batteries in winter conditions, and how the state of charge can determine when it freezes. Sponsored by Auto Value and Bumper to Bumper.
Andrew Markel explains how modern alternators are designed to have their loads regulated by the ECM, eliminating the need for full field testing. Sponsored by Auto Value and Bumper to Bumper.
Andrew Markel stresses the importance of checking the battery during an alternator replacement job, and replacing it if it is worn out or will not accept a charge. Sponsored by DENSO.
This smart charger continually monitors the battery throughout the charging process, adjusting the charging rate to the battery condition.
On 2007 and up GM vehicles, using conventional battery and charging systems tests can prove inconclusive. This is because of GM’s Electrical Power Management (EPM) system designed to monitor and control the charging systems and send diagnostic messages to alert the driver of possible problems. The EPM system primarily utilizes existing on-board computer capabilities to maximize the effectiveness of the charging systems, manage the load, improve battery state-of-charge and life, and minimize the system’s impact on fuel economy.
A good battery with an adequate charge is absolutely essential for reliable cold starting. A weak battery, or one that is rundown, may not deliver enough amps to crank the engine when temperatures plunge and the oil thickens. Cold weather can be hard on batteries, but so can hot weather because it increases water loss