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GMC Acadia 12V Automotive Battery Replacement Guide
How to change a dead 12 volt car battery in a 1st generation 2007-2016 GMC Acadia SUV with photo illustrated steps.

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2016 GMC Acadia
Rear Passenger Floor Mat
1/4 Turn Counterclockwise
This automotive maintenance tutorial was specifically written to assist owners of the first generation (2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 & 2016) GMC Acadia in changing the front windshield window wiper blades.

Owners of other General Motors vehicles such as the Buick Verano, Regal, LaCrosse, Cascada, Encore, Enclave, Envision, GMC Canyon, Sierra 1500, Terrain, Yukon, Denali, Savana, Spark, Sonic, Cruze, Malibu, Impala, Volt, Camaro, Corvette, SS, Trax, Equinox, Traverse, Tahoe, Suburban, Colorado, Silverado and Express may also find these DIY instructions to be helpful.

The OEM battery is an ACDelco model # 48HPG (catalog number 4180).

Other compatible "Group Size" 48 or H6 batteries with their part numbers are as follows: Bosch S6585B S6, EverStart MAXX-H6, EverStart Platinum AGM H6 (Walmart), Bosch H6-760B, AutoCraft 48H6, AutoCraft Platinum H6-AGM and Legend BAT 7548.

The tools needed to complete this procedure include a Torx T-20 screwdriver, a 10mm socket with a 1/4" drive ratchet, a 6" or 9" extension bar and a 13mm socket with a 3/8" drive ratchet.

Release 2nd Carpet Latch
Lift Up Floor Mat
Passenger Side Mat Removed
The 12 volt car battery in a GMC Acadia is located under the floor board in between the front passenger seat and the second row of passenger seats.

Open the rear door on the passenger side of the SUV and slide the seat all the way back. You may also want to slide the front passenger seat all the way forward.

Release the two black plastic floor mat fasteners by rotating them 1/4 turn counterclockwise.

Flip the floor mat for the rear seats over to the driver side of the vehicle.

Pull Off Plastic Panel
Trim Cover Removed
Loosen Torx T20 Screw
Gently pull off the black plastic trim cover on the rear passenger seat tracks.

Set the trim panel aside in a safe place.

The 12V battery is located under the carpeted access cover.

Loosen the single screw that holds it in place by turning it counterclockwise with a Torx T-20 star bit screwdriver.

The screw will remain attached to the access cover.

Lift Off Access Cover
Battery Under Floor Board
Hold Down Clamp Bolt
Lift off the battery access panel and set it aside in a safe place.

Locate the black plastic battery hold down clamp or "block" on the right side of the battery. (The side closest to outside of the vehicle.)

13mm Socket & Extension
Loosen Counterclockwise
13mm Bolt Removed
Attach the 13mm socket to an extension bar and a 3/8" drive ratcheting wrench.

Loosen the single bolt that secures the battery hold down clamp in place by turning it counterclockwise.

Remove the 13mm bolt and set it aside in a safe place.

Battery Clamp Removed
Loosen Negative Terminal
Pull "-" Terminal Off Post
Remove the black plastic battery clamp block and set it aside in a safe place.

First loosen the nut on the negative "-" terminal by turning it counterclockwise with a 10mm socket and a 1/4" drive ratcheting wrench.

Pull the negative terminal off the "-" battery post.

Cover & Tuck Away
Flip Open Plastic Cover
Loosen 10mm Nut
Wrap the negative terminal in a small towel or rag and tuck it away on the side of the battery to help prevent accidental electrical contact.

Flip open the red plastic cover on the positive terminal.

Loosen the 10mm nut on the positive "+" terminal by turning it counterclockwise a few turns.

Pull Off Positive Terminal
Pull Out Rubber Vent Tube
Lift Out Old Battery
Pull the positive terminal off the "+" battery post, close the red plastic cover and tuck it away on the side of the battery.

Pull the black exhaust vent tube off the side of the battery.

Carefully lift the old battery out of the floor board and gently set it on the ground.

Try to avoid tipping over or dropping the old battery to prevent from having battery acid leak out.

Be sure to take the old battery with you to Walmart or the auto parts store to prevent from having to pay a "core" charge. The retailer will also make sure that the old battery is properly recycled.


Empty Battery Housing
Lower In New 12V Battery
Re-Insert Exhaust Tube
Gently lower the new 12 volt battery in to the housing with the "+" positive side closer to the front of the SUV and the "-" negative side near the rear passenger seat.

If you've had a problem with corrosion (white or blue powder) building up on the terminals or the battery posts, consider installing some felt anti-corrosion washers over the battery posts.

Push the battery exhaust vent tube in to the hole on the left side of the battery (the side facing the rear of the SUV).

Push On Positive Terminal
Tighten 10mm Clockwise
Close Red Plastic Cover
Push the positive terminal on to the "+" battery post.

Tighten the 10mm terminal nut in the clockwise direction until it is snug.

Try to avoid over tightening the terminal nut to prevent from damaging the battery post which could lead to an acid leak.

Flip the red plastic cover closed over the positive battery terminal.

Push On Negative Terminal
Tighten 10mm Clockwise
Plastic Battery Clamp
Then push the negative terminal on to the "-" battery post.

Tighten the 10mm terminal nut by turning it clockwise until it is snug.

Replace Battery Clamp
13mm Bolt
Spin In By Hand
Lower the black plastic battery battery clamp in to place next to the battery. (The side closest to the outside of the SUV.)

Spin in the 13mm bolt a few turns by hand in the clockwise direction to make sure it doesn't become cross threaded.

Tighten 13mm Clockwise
New 12V Battery Installed
Replace Access Panel
Tighten the 13mm bolt in the clockwise direction until it is snug.

Double check that the new battery can not be moved, slid or rocked in place. If the new battery can be moved, tighten the battery clamp bolt another turn or two.

Lower the carpeted battery access cover back in to place.

Tighten T-20 Screw
Replace Plastic Panel
Trim Panel Secured
Tighten the Torx T20 screw by turning it clockwise until it is snug.

Pop the black plastic trim panel back in to place over the metal tracks for the rear seat.

1/4 Turn Clockwise - Lock
Secure Floor Mat
12 Volt Battery Replaced
Flip the floor mat back in to place and rotate the two fasteners 1/4 turn clockwise to secure it in place.

Test the new 12V battery by starting the engine and turning on the headlights.

Please be sure to adjust the time on the clock and program your favorite radio station presets before you start driving.

For more, check out my other 2007-2016 GMC Acadia DIY Repair & Maintenance Guides.

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