# 2018 GMC Terrain - Battery question **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** gmc\ **Created:** [May 24, 2021, 7:12pm UTC](https://community.cartalk.com/t/2018-gmc-terrain-battery-question/177042 "2021-05-24T19:12:03Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![MILOGTrautman](https://avatars.discourse-cdn.com/v4/letter/m/bbce88/32.png) [@MILOGTrautman](https://community.cartalk.com/u/MILOGTrautman)\ **Post date:** [May 24, 2021, 7:12pm UTC](https://community.cartalk.com/t/2018-gmc-terrain-battery-question/177042/1 "2021-05-24T19:12:04Z")
battery will not start vehichle after setting for 3 days, can you install battery tender to take care of problem? ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [May 24, 2021, 7:18pm UTC](https://community.cartalk.com/t/2018-gmc-terrain-battery-question/177042/2 "2021-05-24T19:18:11Z")
a battery tender will keep your battery full charged, but if your battery is going dead after 3 days have your battery checked out. also make sure your not leaving a light or something on. a battery can go for a couple of weeks and you should still be able to start your vehicle. also if you have push to start button dont keep the key fob in your vehicle overnight in the garage. on some vehicles its been known to drain the battery over night because the key fob is communicating with the vehicle all night long. new corvette owners have been finding this out. ---
**Author:** ![jrbirdman07\_166596](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/jrbirdman07_166596/32/23676_2.png) [@jrbirdman07\_166596](https://community.cartalk.com/u/jrbirdman07_166596)\ **Post date:** [May 24, 2021, 11:56pm UTC](https://community.cartalk.com/t/2018-gmc-terrain-battery-question/177042/3 "2021-05-24T23:56:17Z")
honestly if the battery cant hold a charge for 3 days, personally I would change the battery. ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [May 25, 2021, 12:30am UTC](https://community.cartalk.com/t/2018-gmc-terrain-battery-question/177042/4 "2021-05-25T00:30:48Z")
> [@jrbirdman07\_166596](#): > > personally I would change the battery. And not have the battery checked first ? Or even the Alternator ? ---
**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\ **Post date:** [May 25, 2021, 10:36pm UTC](https://community.cartalk.com/t/2018-gmc-terrain-battery-question/177042/5 "2021-05-25T22:36:47Z")
Test the battery and check for an excessive parasitic draw in the electrical system as first steps. ---
**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\ **Post date:** [May 25, 2021, 11:04pm UTC](https://community.cartalk.com/t/2018-gmc-terrain-battery-question/177042/6 "2021-05-25T23:04:33Z")
You might have to check around, our 2017 Acadia limited needed a new battery, we have autostart, and my regular guy said sorry we have to buy that from the dealer and then program it so autostart will work. Nothing is as simple as it used to be. ---
**Author:** ![monkarl](https://avatars.discourse-cdn.com/v4/letter/m/919ad9/32.png) [@monkarl](https://community.cartalk.com/u/monkarl)\ **Post date:** [May 26, 2021, 6:28am UTC](https://community.cartalk.com/t/2018-gmc-terrain-battery-question/177042/7 "2021-05-26T06:28:31Z")
Sounds like something is causing the battery to drain quickly. ---
**Author:** ![circuitsmith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/circuitsmith/32/40376_2.png) [@circuitsmith](https://community.cartalk.com/u/circuitsmith)\ **Post date:** [May 26, 2021, 2:36pm UTC](https://community.cartalk.com/t/2018-gmc-terrain-battery-question/177042/8 "2021-05-26T14:36:55Z")
> [@MILOGTrautman](#): > > can you install battery tender to take care of problem? Before I can answer that I need to know: Is the battery in good condition and been fully charged? Is the car properly charging the battery when running? Is there a parasitic drain when the car is off? A good mechanic or DIYer needs to lay hands on with a multimeter to find these things out.