2017–2023 GMC Acadia

2017-2023 GMC Acadia - Battery Replacement

By Tom Becker ✓ Certified Mechanic · Published Sep 21, 2026 · Updated Oct 22, 2026

🔧 Easy 20–30 minutes $147 DIY

Save $133 by doing it yourself! Shop cost: $280

Quick answer: Battery Replacement on a 2017–2023 GMC Acadia is rated Easy and takes about 20–30 minutes. You'll need 3 tools for this job, and parts cost about $147. This guide walks you through the full job step by step, including the mistakes to avoid.

Quick Video Tutorial

Parts You Need

Total Cost

$147.00

Part Name	Part Number	Price	Buy
Correct group-size battery	—	$140.00	Amazon
Terminal cleaner Optional	—	$8.00	Amazon
Terminal protectant	—	$7.00	Amazon

About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.

💡 Pro tip: Order all parts at once to save on shipping

Step-by-Step Instructions

Follow these steps carefully

Park, power down, and find the battery up front

Park on level ground, shift into Park, set the parking brake, and switch the ignition fully off. Pop the hood. The engine computer sits on a bracket over the battery cover, so note its position.

Unplug the sensor, then disconnect negative first

Find the battery sensor on the negative cable and pull its red locking tab to unplug the sensor's electrical connector first — do not yank the wires. Then loosen the black negative cable's 10mm nut and wiggle the clamp off the post, tucking it aside.

🔧 Mechanic's note — Tom Becker

I tell every DIYer who'll listen: Find the battery sensor on the negative (–) cable and pull its red locking tab to unplug the sensor's electrical connector first — do not yank the wires.

Disconnect positive and move the ECM aside

Unbolt the two 10mm nuts holding the ECM on its bracket over the battery cover and gently move the module aside without stressing its wiring harness — you need the room, but the electronics deserve care.

Remove the 13mm retainer block and lift the battery

The Acadia's battery is locked down by a retainer block at its base, held by a 13mm bolt — reach it with a long extension and remove it. With the retainer free, lift the battery straight up out of the tray, keeping it level. Set the new battery into the tray.

Clean the tray and terminals

Scrub the cable clamps and tray with a wire brush or terminal cleaner until the metal is bright, and wipe the tray clean. A light coat of dielectric grease or terminal protection spray on the posts slows future corrosion.

Reconnect the cables and sensor

Connect the red positive cable first and tighten it snugly, then the black negative cable last — and plug the battery sensor's connector back in until the red tab clicks.

Test and recycle the old battery

Start the engine and confirm a strong crank. Your owner's manual is the final word on any battery registration steps for your Acadia, so check it before calling the job done, and recycle the old battery at a parts store.

All Done!

Test your repair before closing everything up. If something doesn't work right, double-check your steps.

⚠️ Common Mistakes to Avoid

• Looking under the passenger seat — that was the 2007–2016 Acadia; on this generation the battery is under the hood
• Breaking the red locking tab on the battery sensor instead of pulling it to unplug
• Reconnecting in the wrong order — positive first, negative last
• Skipping the 13mm retainer bolt — the battery must be clamped at its base

Tools You'll Need

10mm socket and ratchet 13mm socket with long extension Trim removal tool Wire brush or battery terminal cleaner Dielectric grease or terminal protection spray Safety glasses Gloves

Related Trouble Codes

P0562 System Voltage Low

Torque Specifications

Critical specs — don't skip these!

Bolt	Nm	ft-lbs
Battery hold-down	11	8

Important: Use a calibrated torque wrench. Over-tightening can strip threads. Under-tightening can loosen parts.

⚠️ Safety First!

• Wear eye protection and gloves — battery acid burns skin and eyes
• Never smoke or strike sparks near the battery — batteries vent flammable hydrogen gas
• Keep the battery level at all times and never lay it on its side
• Lift with your legs — this battery weighs around 45 pounds
• Take the old battery to a parts store for recycling; never put it in household trash