🔧 Yukon - Battery Replacement

On your Yukon, the 12V battery sits in the engine bay and supplies power for starting and all electronics. Replacing it is straightforward, but the order you disconnect/reconnect the terminals matters to prevent sparks and module issues.

Difficulty Level: Beginner | Estimated Time: 0.5-1.0 hours

---

⚠️ Safety & Precautions

• ⚠️ Wear eye protection and gloves—battery acid is corrosive.
• ⚠️ Keep flames/smoking away—batteries can vent explosive gas.
• ⚠️ Always disconnect the negative (-) terminal first and reconnect it last to reduce spark risk.
• ⚠️ Keep the key fob at least 15 ft away from your Yukon while working.
• ⚠️ Do not allow tools to touch the battery positive and metal body parts at the same time.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• 10mm socket
• 13mm socket
• 3/8" drive ratchet
• 6" socket extension
• Torque wrench (5-30 Nm range)
• Battery terminal brush
• Trim tool (plastic pry tool)
• Fender cover

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• 12V starting battery (match OE group size and CCA) - Qty: 1
• Battery terminal anti-corrosion pads - Qty: 2
• Battery terminal protectant spray - Qty: 1

---

📋 Before You Begin

• Park on level ground, shift to P, and set the parking brake.
• Open the hood and let the engine bay cool down if it was running.
• If you want to keep radio presets/settings, use a 12V memory saver (special tool). (A memory saver plugs into the OBD port or power outlet to keep modules powered.)
• Make sure all lights are off and remove the key fob from the vehicle area.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Access the battery

• Open the hood and locate the battery in the engine compartment.
• If there is a plastic battery cover, remove it using a trim tool (plastic pry tool). (A trim tool is a plastic wedge that helps pop clips without breaking them.)
• Lay a fender cover over the fender to protect paint.

Step 2: Disconnect the negative (-) terminal

• Use a 10mm socket with a 3/8" drive ratchet to loosen the negative terminal clamp nut.
• Twist and lift the negative cable clamp off the battery post, then tuck it aside so it cannot spring back.
• If it’s stuck, wiggle—don’t pry hard.

Step 3: Disconnect the positive (+) terminal

• Use a 10mm socket with a 3/8" drive ratchet to loosen the positive terminal clamp nut.
• Remove the positive cable from the battery post and position it so it cannot touch the battery again.

Step 4: Remove the battery hold-down

• Locate the battery hold-down at the base of the battery.
• Use a 13mm socket, 6" socket extension, and 3/8" drive ratchet to remove the hold-down bolt(s).
• Set the hold-down hardware aside where it won’t get lost.

Step 5: Remove the old battery

• Lift the battery straight up and out. Batteries are heavy—use good lifting posture.
• If your battery has a small vent tube/elbow attached to the side, gently remove it before lifting the battery out using the trim tool.

Step 6: Clean and prep the connections

• Use a battery terminal brush to clean the inside of both cable clamps.
• Install battery terminal anti-corrosion pads on the new battery posts (one per post).

Step 7: Install the new battery

• Place the new battery into the tray in the same orientation as the old one.
• If equipped, reconnect the battery vent tube/elbow by hand.
• Reinstall the battery hold-down using the 13mm socket, 6" socket extension, and 3/8" drive ratchet.
• Tighten with a torque wrench: Torque to 25 Nm (18 ft-lbs).

Step 8: Reconnect the positive (+) terminal first

• Install the positive cable clamp onto the positive battery post.
• Use a 10mm socket and 3/8" drive ratchet to tighten, then finish with a torque wrench: Torque to 17 Nm (13 ft-lbs).

Step 9: Reconnect the negative (-) terminal last

• Install the negative cable clamp onto the negative battery post.
• Use a 10mm socket and 3/8" drive ratchet to tighten, then finish with a torque wrench: Torque to 17 Nm (13 ft-lbs).
• Spray both terminals with battery terminal protectant spray.

Step 10: Reinstall any covers

• Reinstall the battery cover (if equipped) by hand and press clips in place.

---

✅ After Repair

• Start your Yukon and confirm it cranks normally.
• Check for warning lights; some may clear after a short drive.
• Set the clock and re-save radio presets if they reset.
• If your Yukon is equipped with a battery current sensor, a scan-tool “battery replacement reset” is recommended after installation; otherwise, the system will typically relearn with normal driving.

---

💰 DIY vs Shop Cost

Shop Cost: $250-$450 (parts + labor)

DIY Cost: $150-$320 (parts only)

You Save: $100-$180 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 hours.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.