2025 GMC Sierra 1500 Factory Maintenance Schedule
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The 2025 GMC Sierra 1500 is a robust truck designed for various demanding tasks and daily driving. Adhering to the factory-recommended maintenance schedule is crucial to ensure its longevity, reliability, and optimal performance. This guide outlines the essential service intervals, detailing what needs attention at each mileage mark, along with considerations for severe-duty operation and common issues.
Quick reference
| Mileage | Service | Notes |
|---|---|---|
| 7,500 miles (or 12 months, whichever comes first) | Oil and filter change, Tire rotation, Multi-point inspection | This is the standard interval. Use a GM-approved dexos-spec synthetic blend or full synthetic oil. |
| 15,000 miles (or 24 months) | Engine air filter inspection, Cabin air filter inspection | Inspect and replace if dirty or clogged. |
| 22,500 miles (or 36 months) | Oil and filter change, Tire rotation, Multi-point inspection | Repeat standard services. |
| 30,000 miles (or 48 months) | Brake fluid flush, Fuel filter inspection (diesel models only) | Replace brake fluid every 2 years or 30,000 miles. Inspect diesel fuel filter and replace if needed. |
| 37,500 miles (or 60 months) | Oil and filter change, Tire rotation, Multi-point inspection | Repeat standard services. |
| 45,000 miles (or 72 months) | Engine air filter replacement, Cabin air filter replacement | Replace both filters. |
| 52,500 miles | Oil and filter change, Tire rotation, Multi-point inspection | Repeat standard services. |
| 60,000 miles (or 96 months) | Spark plugs (gasoline engines), Transmission fluid and filter service (heavy duty use), Differential fluid change (heavy duty use), Transfer case fluid change (heavy duty use), Accessory drive belt inspection | Inspect spark plugs, replace if necessary. For heavy-duty use, consider transmission, differential, and transfer case fluid changes. Inspect accessory belt for cracking or wear. |
| 67,500 miles | Oil and filter change, Tire rotation, Multi-point inspection | Repeat standard services. |
| 75,000 miles | Engine air filter inspection, Cabin air filter inspection, Brake fluid flush | Inspect and replace filters if dirty. Repeat brake fluid flush. |
| 82,500 miles | Oil and filter change, Tire rotation, Multi-point inspection | Repeat standard services. |
| 90,000 miles | Engine air filter replacement, Cabin air filter replacement | Replace both filters. |
| 97,500 miles | Oil and filter change, Tire rotation, Multi-point inspection | Repeat standard services. |
| 100,000 miles (or 120 months) | Coolant flush, PCV valve inspection, Timing chain inspection | Flush and replace engine coolant. Inspect PCV valve for proper function. The Sierra 1500 uses a timing chain, which is designed to last the life of the engine under normal conditions; inspect for noise or wear. |
| 112,500 miles | Oil and filter change, Tire rotation, Multi-point inspection | Repeat standard services. |
| 120,000 miles | Brake fluid flush, Spark plugs (gasoline engines), Transmission fluid and filter service (normal use), Differential fluid change (normal use), Transfer case fluid change (normal use), Accessory drive belt replacement | Repeat brake fluid flush. Replace spark plugs. For normal use, perform transmission, differential, and transfer case services. Replace accessory belt. |
| 150,000 miles | Coolant flush, PCV valve inspection, Accessory drive belt inspection | Repeat coolant flush. Inspect PCV valve. Inspect accessory belt. |
Severe-duty schedule
Operating your 2025 GMC Sierra 1500 under severe-duty conditions necessitates more frequent maintenance to prevent premature wear and potential issues. You should consider your driving
More specs for the 2025 GMC Sierra 1500
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2025 GMC Sierra 1500 Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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