Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2000 GMC SierraCoolant Type & Capacity
OEM spec from the factory service manual for the 1500, 2D Pickup, 4.3 W, 4WD, Automatic, Automatic variant.
Quick Answer
Coolant Type
50/50 mixture of DEX-COOL and clean, drinkable water
Capacity
12.60 QTS.
11.92 L
Variant
1500, 2D Pickup, 4.3 W, 4WD, Automatic, Automatic
Source: Factory service manual — 2000 GMC Sierra 1500, 2D Pickup, 4.3 W, 4WD, Automatic, Automatic. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of coolant does a 2000 GMC Sierra take?
- The 2000 GMC Sierra requires 50/50 mixture of DEX-COOL and clean, drinkable water. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the 1500, 2D Pickup, 4.3 W, 4WD, Automatic, Automatic configuration.
- How much coolant does a 2000 GMC Sierra hold?
- The 2000 GMC Sierra cooling system capacity is 12.60 QTS. (11.92 L).
- Can I use universal coolant in my 2000 GMC Sierra?
- It is strongly recommended to use coolant that meets the 50/50 mixture of DEX-COOL and clean, drinkable water specification. Universal coolants may not provide the correct corrosion protection for your engine's materials.
- What happens if I use the wrong coolant in my 2000 GMC Sierra?
- Using coolant that does not meet the OEM specification can cause corrosion, gasket damage, and overheating. Always verify the correct coolant type before topping off or flushing the system.