What is draining the battery of a 2004 Pontiac Bonneville

Asked by Gregory Jun 05, 2022 at 11:37 AM about the Pontiac Bonneville

Question type: Maintenance & Repair

Battery is constantly draining for no apparent reason?

2 Answers


It's caused by an electrical short. You or your mechanic will have to probe each and every circuit to determine which circuit it is, then find the problem on the circuit by then inspecting and probing the wiring and switches. Most times it is a cut, worn wire insulation and or corrosion.

2 people found this helpful.

Search " parasitic drain " Do you have something plugged into the cigarette lighter ?

2 people found this helpful.
Best Answer Mark helpful

Your Answer:

Own this car?

Share your experience with others.

CarGurus Experts

  • #1
    james sparrow
  • #2
    G A Arne
  • #3
    John Saffrahn
View All

Know more, shop wisely


Related Models For Sale

Used Pontiac Grand Prix
236 listings starting at $1,230
Used Pontiac Firebird
20 Great Deals out of 444 listings starting at $3,950
Used Pontiac Grand Am
86 listings starting at $1,950
Used Buick Regal
48 Great Deals out of 714 listings starting at $2,000
Used Pontiac G8
6 Great Deals out of 116 listings starting at $5,950
Used Chevrolet Camaro
826 Great Deals out of 14,829 listings starting at $4,999
Used Dodge Charger
927 Great Deals out of 39,157 listings starting at $1,152
Used Pontiac Catalina
26 listings
Used Chevrolet Impala
338 Great Deals out of 4,734 listings starting at $604
Used Buick LeSabre
187 listings
Used Pontiac G6
13 Great Deals out of 359 listings starting at $1,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.