2017 Chevrolet Silverado 2500HD Battery Size & Group

Quick Answer

• BCI Group Size: Group 65 (Gasoline), Dual Group 31 (Diesel)
• CCA Rating (minimum): 720 CCA (Gasoline), 800 CCA per battery (Diesel)
• Reserve Capacity (minimum): 120 minutes (Gasoline), 160 minutes per battery (Diesel)
• AGM vs. Flooded: Both factory configurations typically use flooded lead-acid batteries, but AGM is an excellent upgrade for improved durability and performance.
• Terminal Layout: Top post (SAE Group 65 for gasoline, SAE Group 31 for diesel)
• Physical Dimensions (Approximate):
  • Group 65: 12" L x 7.5" W x 7.5" H
  • Group 31: 13" L x 6.8" W x 9.4" H
• Dual-Battery Setup: Yes, diesel models come standard with a dual-battery setup for increased cranking power.

Replacement Battery Options

When it comes to replacing the battery in your 2017 Chevrolet Silverado 2500HD, several reputable brands offer options that meet or exceed the original equipment specifications. Always verify fitment with your specific vehicle and engine type.

• Interstate:
  • Gasoline (Group 65): MTP-65, MTX-65 (AGM upgrade)
  • Diesel (Group 31): MTP-31, MTZ-31 (AGM upgrade)
• Optima:
  • Gasoline (Group 65 equivalent): YellowTop D34/78 (requires adapter or specific tray), RedTop 34/78 (requires adapter or specific tray)
  • Diesel (Group 31 equivalent): YellowTop H6 (requires adapter or specific tray)
• DieHard:
  • Gasoline (Group 65): DieHard Platinum 65 (AGM), DieHard Gold 65
  • Diesel (Group 31): DieHard Platinum 31M (AGM), DieHard Gold 31
• Odyssey:
  • Gasoline (Group 65): ODP-AGM65 (PC1750)
  • Diesel (Group 31): ODP-AGM31 (PC2150 or PC1800-FT for front terminal Group 31)
• ACDelco:
  • Gasoline (Group 65): ACDelco Professional 65-7YR, ACDelco Advantage 65B48PG
  • Diesel (Group 31): ACDelco Professional 31PG, ACDelco Advantage 31S

AGM vs. Flooded — Which Does This Vehicle Need?

The 2017 Chevrolet Silverado 2500HD, whether equipped with the gasoline or diesel engine, typically comes from the factory with flooded lead-acid batteries. These are traditional batteries filled with liquid electrolyte. However, upgrading to an Absorbed Glass Mat (AGM) battery is highly recommended and offers several advantages.

AGM batteries are a sealed, maintenance-free design where the electrolyte is absorbed into fiberglass mats. This construction provides:

• Improved Durability: More resistant to vibration, which is beneficial for heavy-duty trucks.
• Higher Cranking Power: Often deliver more consistent power, especially in extreme temperatures.
• Slower Self-Discharge Rate: Holds a charge longer when the vehicle is not in use.
• Leak-Proof: Less risk of acid spills, making them safer and allowing for more flexible mounting.
• Better for Accessory Loads: More resilient to deep cycling, making them suitable for vehicles with many electronic accessories or those that frequently sit with the engine off.

While not strictly "needed" in the sense of the factory requirement, an AGM battery is a superior choice for the demanding environment of a heavy-duty truck and can offer a longer service life and better performance.

Post-Installation Relearn / Reset Procedure

After disconnecting and replacing the battery in your 2017 Chevrolet Silverado 2500HD, you may experience a few minor issues or warning lights. Most modern vehicles, including the Silverado, have an onboard computer (BCM - Body Control Module) that monitors battery voltage and charging. A battery disconnect can sometimes trigger a "relearn" or reset procedure.

For the 2017 Silverado 2500HD, the procedure is generally straightforward:

1. Connect the new battery: Ensure all terminals are clean and securely tightened.
2. Start the engine: Some systems may require a few minutes of idling or driving to complete their relearn process.
3. Window Express Up/Down Reset (if needed): If your power windows