2017 GMC Yukon XL
Project Overview
This 2017 GMC Yukon came in with a tapping noise and check engine light, symptoms of a failed DOD lifter and bent pushrod—a common issue on these engines once they’re out of warranty. Rather than simply replacing the faulty parts, KTR took a smarter approach, turning a costly repair into a lasting performance upgrade.
Specs
- Platform:
- 2017 GMC Yukon XL
- Engine:
- BTR Racing L83 DOD Conversion Cam LS7 Lifters Hardened Pushrods · S&B Cold Air Intake
- Drivetrain:
- OEM
- Brakes:
- OEM
- Wheel/Tire:
- OEM
- Audio & Connect:
- OEM
- Interior:
- OEM
- Baseline:
- Est. 280 HP / 315 FtLb
- Final Output:
- Est. 320 HP / 330 FtLb
- Dyno:
Engine Repair & Performance Upgrade
We disassembled the L83 engine and replaced the camshaft, lifters, valve springs, and pushrods with a BTR Racing DOD-delete package, effectively removing the problem-prone Displacement on Demand system. The upgrade not only prevents future lifter failure but also adds power and throttle response across the rev range.
To complement the new setup, we installed an S&B cold air intake for improved airflow and finished things off with a fresh set of brakes before returning the vehicle to the customer. The result: more power, better reliability, and a lower total cost than a factory-style repair that would’ve likely failed again.
Dyno Results
Note: BTR L83 DOD-delete package with LS7 lifters and hardened pushrods.
