Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSGMC2020ACADIA SLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 22 (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPROACTIVE ALERT IDENTIFIER SAC005CIRCUIT/SYSTEM TESTING

2020 GMC Acadia SL

Circuit/System Testing

2020 GMC Acadia SLSECTION Circuit/System Testing

WARNING: This page is about a different car, the 2019 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

Ignition OFF, measure and record the C1 Battery voltage at the terminals.
Verify the measured voltage is between 12.0 - 15.0 V.
- If voltage is less than 12.0 V or greater than 15.0 V
  Refer to Battery Inspection/Test .
- Go to next step: If voltage is between 12.0 - 15.0 V
Test for less than 0.5 V between the positive battery terminal and positive terminal at the X50D Fuse Block - Battery with the ignition in the CRANK/START position.
- If 0.5 V or greater
  Replace the positive battery cable.
- Go to next step: If less than 0.5 V
Test for less than 0.5 V between the positive battery cable at the X50D Fuse Block - Battery and terminal 1 X2 or A X2 at the M64 Starter Motor with the ignition in the CRANK/START position.
- If 0.5 V or greater
  Replace the positive battery cable.
- Go to next step: If less than 0.5 V
Test for less than 0.5 V between the negative battery cable and the M64 Starter Motor case with the ignition in the CRANK/START position.
- If 0.5 V or greater
  Replace the negative battery cable.
- Go to next step: If less than 0.5 V
Perform Battery Inspection/Test Using the EL-50313 Midtronics Battery Tester/Charger.
- If Battery Fails the Test
  Replace the C1 battery.
- Go to next step: If the Battery Passes the Test
  Go to next step: Replace the M64 Starter Motor.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.