2002 GMC Savana Battery keeps Dying

2002 GMC SAVANA
109,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
GLOWMAN222
  • MEMBER
  • 1 POST
I have owned this 2002 Savanna for the last almost 2 years. Recently, I went out and the battery was dead. We jump started it and over the course of a week, the battery kept dying overnight. The rear brake lights had also remained on while the vehicle was off w/ no keys in the ignition, but I put the keys back in, and turned it forward and back, and they shut off. I went and removed the battery that was dying, and bought a brand new one. After that, I checked to see that all possible wires were covered and not exposed anywhere. The new battery has consistently died (usually overnight). We had the alternator tested, and it seems to be functioning correctly, also, the volt meter in the van reads 14 everytime, even though it is reading fine. We just can't seem to figure out what is draining the battery overnight?
Oct 26, 2009 at 7:46 PM
Advertisement
Avatar
RASMATAZ
  • ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Could be a short circuit within the electrical system that's draining the battery overnite or a problem with the computer field generation circuit of the alternator-Do battery drain test below.


https://images.2carpros.com/forum/automotive_pictures/12900_parastic_draw_1_148.jpg

Oct 26, 2009 at 10:09 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.