2021 Gmc Sierra 2500 HD 6.6L Duramax V8 DIESEL A/T RWD SLE Extended Cab Pickup Fleetside Intercooler - 84747171

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2021 GMC Sierra 2500 HD 6.6L Duramax V8 DIESEL A/T RWD SLE Extended Cab Pickup Fleetside

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Intercooler

Part Number: 84747171
Supersession(s): 84012682

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Charge Air Cooler. Cooler Assembly - CHRG Air. InterCooler.
InterCooler.

Intercooler

Fits Sierra 2500 HD, Sierra 3500 HD, Silverado

6.6 LITER DIESEL. Silverado, Sierra 2500 HD; Diesel. Silverado, Sierra 3500 HD; Diesel.
Intercooler - Repair or Replace
If your 2021 GMC Sierra 2500 HD is equipped with a turbo and you've noticed a reduction in acceleration or a hissing on acceleration accompanying your check engine light, your intercooler or its piping/tubes may need to be repaired or replaced.