Marsram Throttle Body Replacement for 2009–2015 GM V8 Trucks & SUVs — OE Fit, Updated Sensor

Marsram’s electronic throttle body is a direct-fit replacement for many 2009–2015 GM V8 trucks and SUVs, built to OE specifications and ready to be rematched upon installation.

If your Chevrolet, GMC, Cadillac or Hummer with a V8 engine is showing drivability issues traced to the throttle body, this Marsram assembly offers a factory-style swap without the long lead time of dealer parts. Designed to match the original mounting points, electrical connectors, and airflow profile, the unit is manufactured from reinforced materials to resist heat and corrosion and uses an updated internal sensor to address common wear points found on older throttle bodies.

Which vehicles does this throttle body fit?

This Marsram throttle body covers a broad range of GM V8 applications across Chevrolet, GMC, Cadillac and Hummer from model years roughly 2009–2015. It fits multiple engine displacements and model families, making it a practical part to keep on hand for common service repairs.

• Chevrolet: Avalanche, Camaro, Colorado, Corvette, Suburban, Express, Silverado (1500/2500/3500), Tahoe — various 4.8L–6.2L V8s.
• GMC: Canyon, Savana, Sierra (1500/2500/3500), Yukon, Yukon XL, Envoy — compatible across the listed V8 sizes.
• Cadillac & Hummer: CTS, Escalade families and H2/H3/H3T models within the noted years and V8 displacements.

How does this replacement compare to the original OEM part?

Marsram builds the throttle body to meet the same fit, form and connector layouts as the original equipment so it installs without modification. The assembly uses an improved internal electronic sensor design aimed at reducing the premature wear issues that affect some legacy throttle bodies.

• Meets OE mounting and electrical specifications for straightforward installation.
• Updated sensor assembly reduces common failure modes seen on older units.
• Constructed from reinforced materials for better heat and corrosion resistance.

Do I need programming or any special steps when installing it?

The Marsram throttle body does not require dealer-level programming out of the box, however it does require rematching (throttle body relearn) with the vehicle’s engine control system after installation to ensure correct pedal response and idle behavior. Rematching is a routine service procedure often done with a scan tool or following the OEM relearn steps.

• No initial ECU programming is needed before installation.
• Perform throttle body rematch/relearn after installation for proper throttle calibration.
• Compatible with OE sensors and connectors—no wiring changes expected.

What part numbers and quality assurances should I be aware of?

This Marsram unit replaces several OE references, making it convenient when sourcing a direct-fit replacement for common GM parts. Manufacturing emphasizes durable materials and an improved sensor to address reliability concerns that lead to failures in some original parts.

• Replaces OE numbers: 12601387, 12629992, 217-3151, 2173151.
• Manufactured to match original throttle body specifications and connector layouts.
• Engineered internal changes aim to improve longevity over earlier designs.

Who is this for: technicians, independent repair shops and owners of compatible Chevrolet, GMC, Cadillac or Hummer V8 vehicles who need a reliable, direct-fit throttle body replacement without dealer delays. It’s suited for anyone looking to restore proper throttle response and idle behavior with a part designed to match OE fitment and updated for improved sensor durability. Ensure you follow vehicle-specific rematch/relearn steps after installation and verify compatibility with your VIN and engine code before purchase.