2010 GMC Sierra 2500HD: Battery drain after 24 hours
Common wear/failure (not a recall)
Symptoms
Owners of the 2010 Sierra 2500HD report: battery drain after 24 hours. CarComplaints.com lists 2 owner complaints, average mileage 14,950 miles.
NHTSA has 4 owner complaints for the 2010 Sierra 2500HD in this area. Examples:
- NHTSA complaint ODI #10695478 (filed 03/19/2015): “Tl* the contact owned a 2010 gmc sierra. the contact stated that shortly after parking, the vehicle caught fire. a fire report was filed and no injuries were sustained. the vehicle was destroyed and towed back to the contact's residence. the manufacturer was m…”
- NHTSA complaint ODI #10649868 (filed 10/25/2014): “On or about that date, driving about 25 miles on rural roads at speeds from 45 to 55 mph, the dampness in the air caused condensation haze to form on the inside of the window. i turned on the defrosters which cleared off the drivers side window so i could see…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: none clearly reported. Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Moderate
Finding and splicing chewed wiring is doable with a multimeter and patience but can be time-consuming; harness replacement is pro work. (Our assessment.)
Cost
No sourced cost range: get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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