Group 48 (also called H6), 760 CCA, AGM. Group 48/H6 is the standard fitment for late-model Chevy Silverado, GMC Sierra, and many GM SUVs — especially those with Auto Stop/Start technology, which requires AGM for reliable repeated restarts. Apex Auto Spare Parts stocks Group 48/H6 AGM batteries ready to ship across Canada and the US.
Quick Specs
| BCI Group Size | 48 (H6) |
| Cold Cranking Amps (CCA) | 760 |
| Reserve Capacity | 130 minutes |
| Voltage | 12V |
| Construction | AGM — required for vehicles with Auto Stop/Start |
| Dimensions | 12.0 in x 6.9 in x 7.5 in (305 x 175 x 190 mm) |
| Terminal Layout | Top post, dual terminal options available |
| Warranty | Free replacement — ask for current term |
Vehicle Compatibility
- Chevy Silverado 1500 (2014–2023) — especially trims with Auto Stop/Start
- GMC Sierra 1500 (2014–2023)
- Many GM SUVs: Tahoe, Suburban, Yukon with H6 spec
- Group 48 and H6 are the SAME size — interchangeable terms
⚠️ Start/Stop vehicles MUST use AGM: If your Silverado or Sierra has Auto Stop/Start, installing a standard flooded battery will cause the system to malfunction or disable itself. AGM is required, not optional, for these trims.
Why This Battery Costs More Than Standard
- AGM batteries handle hundreds of extra start cycles required by Auto Stop/Start
- Higher reserve capacity keeps electronics running during engine-off stops at lights
- More robust internal construction — designed for thousands of partial discharge cycles
- Better cold cranking performance for V8 engines in winter
Signs You Need a New Group 48/H6 Battery
- Auto Stop/Start feature stops working or shows a warning message
- Slow engine restart after stopping at a light
- Dashboard battery or charging system warning
- Battery older than 4 years — AGM lifespan in heavy-cycling use
Frequently Asked Questions
Is Group 48 the same as H6?
Yes — Group 48 (BCI/North American designation) and H6 (European/DIN designation) refer to the same physical battery size and are interchangeable terms for the same product.
My Silverado has Auto Stop/Start — can I use a cheaper flooded battery?
No. Auto Stop/Start systems require AGM batteries to handle the frequent restart cycles. A flooded battery will wear out quickly and may trigger system fault codes.
What’s the difference between Group 48 and Group 49?
Group 49 (H8) is larger with higher capacity, used in heavier-duty applications. Group 48/H6 is the standard fit for most Silverado and Sierra 1500 trucks — confirm with your current battery label.
Does this fit GMC Yukon and Chevy Tahoe?
Many Yukon and Tahoe trims also specify Group 48/H6, especially with Auto Stop/Start. Call us with your VIN to confirm.
Not sure if this battery fits your truck?
Call or WhatsApp us with your year, make & model — we confirm the correct group size and CCA before you order.
📞 +1 (512) 236-5489 💬 WhatsAppQuestion:
- What battery group does my Silverado or Sierra take if it has Auto Stop/Start?
- Is Group 48 the same as H6?
- Why did my truck crank slowly in extreme cold with the stock battery?
- Can I use a flooded battery instead of AGM in a start-stop Silverado?
- What’s the difference between Group 48 and Group 49?
- Does GM require AGM for vehicles with off-road lighting packages?
- How much CCA do I need for a 6.0L gas Silverado in cold climates?
- Is left negative, right positive terminal the standard for Group 48?
- How long does an AGM Group 48 battery last compared to flooded?
- Can I bypass the start-stop system to use a regular battery instead?
