2015 GMC Yukon Coolant Capacity & Type
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The 2015 GMC Yukon has a total cooling system capacity of up to 15.1 quarts (14.3 liters).
Quick Answer
- Total Cooling System Capacity: 10.7 to 15.1 quarts (10.1 to 14.3 liters)
- OEM Coolant Specification: ACDelco DEX-COOL (Orange, OAT-based, GM 6277M)
- Mix Ratio: 50/50 with deionized water (pre-mixed or concentrate)
Capacity by Engine Option
| Engine | Capacity (quarts) | Capacity (liters) |
|---|---|---|
| 5.3L V8 | 10.7 | 10.1 |
| 6.2L V8 | 15.1 | 14.3 |
Flush Interval
- Normal Service: 5 years or 150,000 miles
- Severe Service: Every 50,000 miles
How to Refill & Bleed
Refilling the coolant on a 2015 GMC Yukon is straightforward. After draining the old coolant, you can refill the system through the coolant reservoir. There are no special bleed screws on this model; instead, the system is designed to self-bleed. To ensure all air is removed, run the engine with the heater on high until it reaches operating temperature, then top off the coolant as needed.
Common Cooling System Issues
This generation of GMC Yukon is known for a few common cooling system issues:
- Water Pump Failure: The water pump may leak or fail, leading to overheating.
- Thermostat Issues: The thermostat can stick open or closed, causing the engine to run too hot or too cold.
- Radiator Leaks: Plastic end tanks on the radiator can crack and leak over time.
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More specs for the 2015 GMC Yukon
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.
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.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
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
2015 GMC Yukon 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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