Not a Malibu. My 2003 Cavalier. Battery was getting some age and cranking slow on cold mornings . No other issues. Replaced the battery after about 1 minute gauges all go down . Check gauges, theft system and the wrench light come on . Car is still running fine. Turn off head lights and gauges come up. Checked across battery charging at 14.5 V. Put old battery back in still doing the same. Seems fine until you turn everything on. But still shows good charging across battery. Any Ideas ?