Optimizing Your GMC Truck’s Transmission for Better Performance and Efficiency
Tyler SpanglerAdjusting the transmission shift points on your GMC truck can enhance both performance and fuel efficiency. To access the Service Shift Points mode, follow these steps: turn the ignition to Run without starting the engine, pump the gas pedal three times within five seconds, turn the key off, press and hold the brake pedal, turn the key back to Run, and release the brake. This will allow you to use the steering wheel controls to adjust the shift points for each gear. Increasing the RPM delays the shift for better performance, while decreasing it can boost fuel economy. Once adjustments are made, simply turn the key off to save settings. Benefits include improved performance, better towing capacity, and a personalized driving experience. However, making small adjustments is advised to avoid adverse effects. For model-specific instructions, consult your owner's manual or reliable online resources. Always feel free to reach out to professionals for further assistance.
