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SKU:
NLT2S00549
Ships for free in 2–4 business days.
Throttle Body Assembly 977-859 for Chevrolet Silverado / GMC Sierra Trucks
$173.59
In Stock
$173.59
Sale price
$173.59
Regular price
This replacement throttle body assembly is intended for matching Chevrolet and GMC truck engines using the Dorman 977-859 configuration. It controls intake airflow according to the electronic throttle system's commands.
Estimated delivery between
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Chevrolet Silverado 1500 with matching engine and throttle body
- Chevrolet Silverado 2500HD with matching engine and throttle body
- Chevrolet Silverado 3500HD with matching engine and throttle body
Product Overview
A sticking throttle plate, contaminated bore or failed throttle position sensor can cause rough idle, reduced-power messages or hesitation. Trouble codes and wiring tests should guide replacement because airflow faults are not all caused by the throttle body.
For a diagnosed electronic throttle failure or damaged plate/shaft assembly.
Key Features & Performance
- This replacement throttle body assembly is intended for matching Chevrolet and GMC truck engines using the Dorman 977-859 configuration.
- For a diagnosed electronic throttle failure or damaged plate/shaft assembly.
- Fitment check: Verify engine displacement, electronic connector, throttle-bore diameter and OEM interchange number. The 977-859 number is a replacement-product reference, not universal GM fitment.
Replaces / Cross-References
- 977-859
What Is Included
One electronic throttle body assembly.
Fitment Notes
Verify engine displacement, electronic connector, throttle-bore diameter and OEM interchange number. The 977-859 number is a replacement-product reference, not universal GM fitment.
Frequently Asked Questions
Is this an OEM part? No. This listing describes an aftermarket replacement, service part or accessory unless explicitly stated otherwise. Brand and OE numbers identify intended applications; they do not imply manufacturer authorization.
How do I check compatibility? Verify engine displacement, electronic connector, throttle-bore diameter and OEM interchange number. The 977-859 number is a replacement-product reference, not universal GM fitment.
Part Summary
Keywords: Throttle Body Assembly 977-859 for Chevrolet Silverado / GMC Sierra Trucks, 977-859, Chevrolet Silverado 1500 with matching engine and throttle body, Chevrolet Silverado 2500HD with matching engine and throttle body, Chevrolet Silverado 3500HD with matching engine and throttle body.
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.