The Chevrolet Silverado 1500 needs a strong battery for its V8 starts and accessory load, and some trims run dual batteries. Most Silverados use a Group 48 (H6) or Group 94R battery. Here is the group size, cost, and how to replace it.
| Model / Years | Group size | Typical CCA | Part cost |
|---|---|---|---|
| Silverado 1500 2019-2025 | Group 48 (H6) | 730-800 CCA | $180-$300 |
| Silverado 1500 2014-2018 | Group 48 or 34 | 700-800 CCA | $180-$280 |
| Silverado older | Group 34 | 600-770 CCA | $150-$250 |
| Silverado diesel dual | Group 94R x2 | 730+ CCA each | $180-$300 each |
Many modern Silverados use a Group 48, also called H6, battery. Some diesel and heavy-duty configurations run dual batteries and may use a Group 94R or similar. Older Silverados commonly used a Group 34 battery. Confirm the fit by checking the existing battery and the tray.
Aim for high cold cranking amps, often 730 or more, to handle the V8 starter and cold-weather starts.
A Group 48 or 94R battery generally costs about 180 to 300 dollars for the part. AGM versions cost more. With shop installation, add roughly 30 to 80 dollars in labor. Dual-battery trucks require two batteries.
With the truck off, disconnect the negative terminal first, then the positive. Remove the hold-down, lift out the heavy battery, and set the new one in the same orientation.
Reconnect positive first, then negative, secure the hold-down, and reset the clock. Some trucks may need the battery registered for the charging system to optimize.
Watch for slow cranking, dim lights, a clicking start, and messages in the driver display. On trucks with auto stop-start, that feature disabling itself is an early sign the battery is weakening.
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