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The 2008 Chevrolet Avalanche is a popular choice for those looking for a versatile and capable truck. However, some owners may find that the factory-installed Displacement on Demand (DOD) system can be a source of frustration. The DOD system, which deactivates half of the engine’s cylinders during light load conditions to improve fuel efficiency, can cause issues such as oil consumption and lifter failure.

One potential solution to these problems is to delete the DOD system entirely. One Avalanche owner recently decided to take this route and also installed a Texas Speed and Performance (TSP) stage 1 cam. This combination can drastically improve the engine’s performance and reliability, but it also requires some careful tuning and adjustments to the vehicle’s computer system.

The first step in this process is the installation of the TSP camshaft. This aftermarket camshaft is designed to provide improved power and torque across the entire RPM range, and when paired with the removal of the DOD system, it can make a significant difference in the vehicle’s performance.

After installing the camshaft, the next step is to delete the DOD system from the engine. This involves removing the DOD lifters and replacing them with standard lifters, as well as installing new pushrods and a non-DOD camshaft retention plate.

However, it’s important to note that this modification was made without a proper tune to the vehicle’s computer system. This means that the DOD system has not been turned off in the computer yet, potentially leading to drivability issues and error codes being thrown. It’s crucial to have the vehicle properly tuned to accommodate the changes made to the engine, as this will ensure optimal performance and reliability.

In conclusion, the decision to delete the DOD system and install a TSP stage 1 cam can greatly improve the performance and reliability of the 08 Avalanche. However, it’s important to proceed with caution and ensure that the necessary tuning and adjustments are made to the vehicle’s computer system. With the right modifications and proper tuning, the 08 Avalanche has the potential to become an even more capable and enjoyable truck to drive.