Battery problem
2013 Chevy Tahoe with 120K miles. Battery was last replaced Jan '17. For the past 8 months, especially after a cold night or when we haven't driven the car for a day or two, the car shows low batt...
Forum Discussion
jornvango wrote:
4. Stopped the car after driving 30 mins 12.5V
5. After 1 hour of not running 12.2 V
Slownsy wrote:
.The battery has had it
Frank.
I think Frank may be correct.
The only other test requires a clamp on ammeter like a Uni-T UT210E - Amazon $50
After driving for 30 minutes and shutting the truck off, clamp the meter on either the positive or negative battery lead. It usually take 5-10 minutes for all computers to "go to sleep" so be patient. If the meter reads much more than 10-20mA you have a "parasitic load" pulling down your battery.
