The 2017 GMC Sierra uses a standard 12-volt automotive battery. The exact group size depends on your specific configuration (engine, trim, and whether stop/start is equipped); many Sierra models use a conventional flooded battery, while some with start/stop may use an AGM battery. To be certain, check the battery label, the owner's manual, or look up the OEM specs using your vehicle Identification Number (VIN).
Identify the correct battery for your Sierra
To ensure you replace it with the right battery, follow these steps:
- Inspect the battery label for the group size (often listed as Group Size) and the cold-cranking amps (CCA).
- Consult the 2017 Sierra owner’s manual or GM service information for the exact battery specification for your model (1500, 2500, engine type, and presence of stop/start).
- Use your VIN at a parts retailer or GM’s battery finder to confirm the OEM battery that fits your exact truck.
- If replacing yourself, decide between a conventional flooded lead-acid battery or an AGM type, depending on whether your truck has stop/start and your climate.
Note: Some 2017 Sierra configurations with stop/start systems rely on AGM batteries to handle frequent cycling; otherwise, a standard flooded battery is common.
Battery options and specs to consider
When selecting a replacement, pay attention to these specs to ensure compatibility and performance:
- Group size: Must fit the battery tray and hold-down hardware; GM trucks commonly use group sizes in the 65–78 range, but verify for your exact configuration.
- Cold-cranking amps (CCA): Choose a rating that meets or exceeds the OEM specification; higher CCA is beneficial in cold climates.
- Reserve capacity (RC): A higher RC provides more sustained power during alternator failure or heavy electrical loads.
- Battery type: Flooded lead-acid is standard for many Sierra models; AGM is preferred if stop/start is present or if you need enhanced durability and cycling tolerance.
- Warranty and OEM vs aftermarket: OEM/ACDelco options are common; compare warranties (typically 2–4 years) and consider trusted brands.
In short, match the replacement to the corresponding group size, CCA, and battery type required for your exact 2017 Sierra configuration. When in doubt, a local dealer or reputable parts retailer can confirm the correct spec using your VIN.
Summary
For a 2017 GMC Sierra, you’re looking at a 12-volt automotive battery. The specific group size and whether you need a conventional flooded or AGM battery depend on engine, trim, and whether stop/start is equipped. Always verify the exact group size and CCA from the battery label, the owner’s manual, or with a VIN-based OEM lookup, and choose a replacement that matches or exceeds the original specifications. This approach ensures reliable starts and proper electrical performance across all seasons.