Skip to content

84208257 Genuine GM Engine Control Module For Silverado Sierra 5.3L 6.2L

P/N: 84208257 Manufactured by: GM
Original price $428.00 - Original price $428.00
Original price
$428.00
$428.00 - $428.00
Current price $428.00
2 in Stock
Condition: New
We accept:
  • American Express
  • Diners Club
  • Discover
  • Google Pay
  • JCB
  • Mastercard
  • PayPal
  • Venmo
  • Visa
Need help choosing the right part?Contact our support team
+1 828-705-1030
Monday – Saturday | 8:00 AM – 8:00 PM (EST)
2-3 Day Free Shipping
Return within 30-Days
Packed Ready to Ship
24/7 Expert Support
2-Year Warranty

Unit Auto Parts LLC provides a complimentary 2-Year Warranty on all automotive parts. Shop with confidence knowing your purchase is protected. Learn More

Description

The 84208257 is a genuine GM Engine Control Module produced for select 2019–2022 Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Suburban, GMC Yukon, and GMC Yukon XL models equipped with 5.3L and 6.2L V8 gasoline engines. It serves as the central processor of the engine control system, collecting information from factory sensors and calculating the commands needed for fuel injection, spark timing, throttle operation, and emissions management.

Vehicle Compatibility

Year Vehicle Engine Trims
2022 Chevrolet Silverado 1500 5.3L V8 Gas, 6.2L V8 Gas Custom Trail Boss, High Country, LT, LT Trail Boss, LTZ, RST, WT, ZR2
2022 Chevrolet Silverado 1500 LTD 5.3L V8 Flex, 5.3L V8 Gas, 6.2L V8 Gas Custom Trail Boss, High Country, LT, LT Trail Boss, LTZ, RST, SSV, WT
2022 Chevrolet Suburban 5.3L V8 Gas Commercial, LS, LT, Premier, RST, Z71
2022 GMC Sierra 1500 5.3L V8 Gas, 6.2L V8 Gas AT4, AT4X, Denali, Denali Ultimate, Elevation, Pro, SLE, SLT
2022 GMC Sierra 1500 Limited 5.3L V8 Flex, 5.3L V8 Gas, 6.2L V8 Gas AT4, Denali, Elevation, Pro, SLE, SLT
2022 GMC Yukon 5.3L V8 Gas AT4, SLE, SLT
2022 GMC Yukon XL 5.3L V8 Gas AT4, SLE, SLT
2021 Chevrolet Silverado 1500 5.3L V8 Flex, 5.3L V8 Gas, 6.2L V8 Gas Custom, Custom Trail Boss, High Country, LT, LT Trail Boss, LTZ, RST, SSV, WT
2021 Chevrolet Suburban 5.3L V8 Gas Commercial, LS, LT, Premier, RST, Z71
2021 GMC Sierra 1500 5.3L V8 Gas, 6.2L V8 Gas AT4, Base, Denali, Elevation, SLE, SLT
2021 GMC Yukon 5.3L V8 Gas AT4, SLE, SLT
2021 GMC Yukon XL 5.3L V8 Gas AT4, SLE, SLT
2020 Chevrolet Silverado 1500 5.3L V8 Flex, 5.3L V8 Gas, 6.2L V8 Gas Custom, Custom Trail Boss, High Country, LT, LT Trail Boss, LTZ, RST, SSV, WT
2020 GMC Sierra 1500 5.3L V8 Flex, 5.3L V8 Gas, 6.2L V8 Gas AT4, Base, Denali, Elevation, SLE, SLT
2019 Chevrolet Silverado 1500 5.3L V8 Flex, 5.3L V8 Gas, 6.2L V8 Gas Custom, Custom Trail Boss, High Country, LT, LT Trail Boss, LTZ, RST, SSV, WT
2019 GMC Sierra 1500 5.3L V8 Flex, 5.3L V8 Gas, 6.2L V8 Gas AT4, Base, Denali, Elevation, SLE, SLT


General Specifications

Condition New
Part Number 84208257
Brand GM
Part Type Engine Control Module (ECM)
Years 2019–2022
Vehicle Chevrolet Silverado 1500, Chevrolet Silverado 1500 LTD, Chevrolet Suburban, GMC Sierra 1500, GMC Sierra 1500 Limited, GMC Yukon, GMC Yukon XL
Engine Compatibility 5.3L V8 Flex, 5.3L V8 Gas, 6.2L V8 Gas
Fitment Type Direct Replacement


Product Features

The 84208257 Engine Control Module is built to match factory performance and installation requirements:

  • Calculates engine operating parameters using data received from factory-installed sensors
  • Controls ignition timing, fuel injection, and throttle response to maintain proper engine operation
  • Communicates with other GM electronic modules to support coordinated powertrain management
  • Engineered with factory-correct connectors and mounting points for compatible vehicle applications
  • Supports the original software strategy used on 5.3L and 6.2L gasoline V8 engines
  • Manufactured to GM engineering specifications for dependable electronic system performance

Application Notes

The 84208257 is intended for vehicles equipped with the factory GM electronic engine management system specified for these applications. After installation, some vehicles may require programming or calibration so the module can operate correctly with the existing electronic control network.

Verify the part number, VIN, engine configuration, and programming requirements before installation.

Make an offer
Make an offer
Make an offer