Gmc · Sierra 1500 L3B MY2025 US · 2025

Gmc Sierra 1500 Sierra 1500 L3B MY2025 US specs & reference

Source-backed reference for the 2025 Gmc Sierra 1500 Sierra 1500 L3B MY2025 US. Start with the most useful engine, fluid, tire, battery and fuel facts, then explore parts, maintenance, recalls and market coverage.

Powertrain: Petrol (non-hybrid) · based on: Powertrain designation

Exact-code coverageSierra 1500 L3B MY2025 US
8verified facts
0parts refs
0maintenance
0campaigns
Open printable owner sheet →
Manufacturer reference · US

Match this configuration before using a specification

This is a reference configuration for the named market and cited edition. Other grades or years sharing this code can differ. It does not establish parts compatibility or applicability to an imported car.

Market
United States (US)
Engine
L3B · 2,700 cc
Powertrain
Petrol

Manufacturer configuration evidence ↗
MY2025 Electrical Body Builder Manual, VIN engine table p.0-3; L3B gasoline engine; no cab, box or drivetrain inferred · checked 2026-11-03

Most useful references

Gmc Sierra 1500 Sierra 1500 L3B MY2025 US specifications

What do you need today?

Jump straight to the ownership answer.

All CarFactBook tools →
Oil Capacity Finder

5.5 US qt (5.2 L) with an aluminum oil pan, or 6.0 US qt (5.7 L) with a plastic oil pan, with filter; identify the installed pan before filling (GM TechLink MY2025 chart)

Engine oil capacity

12V Battery Finder

12-volt Absorbed Glass Mat (AGM) battery for the factory Stop/Start system. Match the replacement number on the original battery label; case size and Ah rating are not specified here.

12V battery

Coolant Finder

11.8 L (12.4 US qt) approximate entire engine cooling system capacity; recheck the level after filling.

Coolant capacity

For people who own this car

Keep a record. Share a real fix.

Already found the reference you needed? Save this exact Gmc Sierra 1500 Sierra 1500 L3B MY2025 USto your Garage, or share a problem and repair outcome for human review.

Garage history stays private by default. Owner reports require no account and are not published before review.

Fresh evidence

Recently verified for this code

CarFactBook coverage

Reference dashboard

A quick view of what CarFactBook has already verified for this exact model code and which ownership areas are still being researched.

30%Early coverage
8verified facts
3/10reference areas
0parts references
Nov 3, 2026latest fact verification
Share the verified referenceCopy a compact, source-attributed block for forums, Reddit or notes.
Oil & fluidsVerified

Oil, coolant, capacities and service fluids.

2 facts
Electrical & batteriesVerified

12V batteries, key batteries and electrical references.

2 facts
Tyres & wheelsNot yet documented

Pressure, factory sizes, wheel fitment and related data.

Fuel & capacitiesVerified

Tank capacity, fuel requirements and range-related references.

1 fact
LightingNot yet documented

Bulb types, lamp specifications and lighting references.

Wipers & exteriorNot yet documented

Wiper sizing and exterior replacement references.

MaintenanceNot yet documented

Intervals, scheduled service work and replacement timing.

Safety & recallsNot yet documented

Official recalls, campaigns and safety notices.

Parts & fitmentNot yet documented

Batteries, bulbs, wipers, filters and exact-model replacement references.

Market valueNot yet documented

Evidence-based market valuation by country and condition.

Coverage is measured across CarFactBook's current ten reference areas. It is not a claim that every possible fact about the vehicle is documented. A Verified Reference verifies the data reference, not the condition or history of a physical vehicle.

Vehicle identity

Exact reference

Make
Gmc
Model
Sierra 1500
Chassis / model code
Sierra 1500 L3B MY2025 US
Documented years
2025
Years covered by the cited manufacturer documents. Production of this code may extend beyond them; match the code on your vehicle.
Verified facts
8
Parts references
0
Own it with evidence

Plan, repair, compare.

Gmc Sierra 1500 Sierra 1500 L3B MY2025 US · Exact vehicle tools

Open your garage →

Your next service, from your actual mileage.

Enter the current odometer and each item’s last completed service. Distance and calendar limits work together: service is due when either limit is reached.

Service history stays in this browser. Existing garage mileage and linked services are imported when you first open this tool. No work is marked completed automatically.

A manufacturer schedule is not yet verified for this exact configuration. You can still record personal tasks below; these are clearly marked as owner-entered.

Add a personal service task

Use an interval you have checked. This personal reminder does not become an OEM recommendation or a published fact.

Market evidence

Vehicle valuation

Asking-price evidence only becomes public after the minimum comparable-data threshold is met.

Separate experimental evidence check

Mileage-aware asking-price evidence

Gmc Sierra 1500 · Sierra 1500 L3B MY2025 US · 2025

This check needs an exact market, year, condition and odometer, sufficient comparable listings and a reviewed calibration. Availability of a market option does not establish coverage for this vehicle.

The current chassis stays fixed. Trim, battery health and accident history are not inferred from model specifications. Prices are never converted from another market.

Source-market options load when this check comes into view; none is selected automatically.
Optional battery and history context — no statistical adjustment

For your reference on this page only. These notes are not submitted, saved by this feature or used to adjust a price. Do not enter personal identifiers. No battery condition or accident history is assumed.

Experimental listing thresholds are safety gates, not guarantees of model accuracy. This is not a sale guarantee, trade-in offer, professional appraisal or official Customs valuation. Read the valuation evidence and methodology →

Cross-model research

Compare common ownership questions

Full reference

Every published fact for Sierra 1500 L3B MY2025 US

Everything below is grouped by ownership area and links to its own answer page with source and verification date.

Battery & electrical

2 facts

Fluids & capacities

2 facts

Engine specifications

2 facts

Fuel & capacities

1 fact

Drivetrain & transmission

1 fact