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.
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HOMESERVICE MANUALSCHEVROLET2010EXPRESS 2500 V8-4.8LREPAIR AND DIAGNOSISSTARTING AND CHARGINGBATTERYSPECIFICATIONSPARASITIC DRAW
2010 Chevrolet Express 2500 V8-4.8L
Parasitic Draw
2010 Chevrolet Express 2500 V8-4.8LSECTION Parasitic Draw
Check and record the current reading.
Note the battery reserve capacity, amp hour rating. Refer to Battery Usage.
Divide the reserve capacity by 4, amp hour rating by 2.4.
Compare this to the multimeter milliampere reading taken in the previous step. The parasitic current drain should not exceed this number. Example: If a battery has a reserve capacity of 100 minutes, (60 A/H) the current drain should not exceed 25 mA.
Note the battery reserve capacity, amp hour rating. Refer to Battery Usage.
Divide the reserve capacity by 4, amp hour rating by 2.4.
Compare this to the multimeter milliampere reading taken in the previous step. The parasitic current drain should not exceed this number. Example: If a battery has a reserve capacity of 100 minutes, (60 A/H) the current drain should not exceed 25 mA.
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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.