2024 GMC Sierra 1500 Serpentine Belt Guide
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Quick Answer
- Belt Length: 93.375 inches (2372 mm)
- Rib Count: 6-rib
- OEM Belt Part Number: 12658149
- Aftermarket Belt Cross-References:
- Gates: K060930
- Dayco: 5060930
- Continental Elite: 4060930
- Auto-Tensioner Part Number: 12690348
- Idler Pulley Part Number: 12690349
Belt Routing
Before you remove the old belt, it's always a good idea to take a quick photo of the belt's path for reference. The serpentine belt on the 2024 GMC Sierra 1500 with the 5.3L V8 engine follows this path:
- Starts at the crankshaft pulley at the bottom.
- Wraps around the A/C compressor.
- Goes over the idler pulley.
- Loops up and around the alternator.
- Comes down to the power steering pump.
- Goes around the water pump.
- Finally, it goes to the tensioner before returning to the crank pulley.
How to Replace the Serpentine Belt
To replace the belt, you'll need a serpentine belt tool or a 3/8" breaker bar. Insert the tool into the square hole on the auto-tensioner and rotate it to release the tension on the belt. This will allow you to slip the belt off the pulleys. When installing the new belt, make sure it is properly seated in the grooves of each pulley before releasing the tensioner.
Replacement Interval
It is recommended to inspect the serpentine belt at every oil change and replace it every 60,000 to 100,000 miles, or as needed.
Signs of a Failing Belt or Tensioner
- Squealing or chirping noises from the engine bay
- Visible cracks, fraying, or glazing on the belt
- The A/C or power steering not working properly
- The engine overheating
- The battery light illuminating on the dash
If you notice any of these signs, it's time to inspect your serpentine belt and tensioner.
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More specs for the 2024 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.
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.
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
2024 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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Values can vary by engine, trim and build date; check your VIN-specific service information. Updated 2026-08-15.