2010 Chevrolet HHR Owner's Manual - Page 145

Up-Shift Light If the vehicle has a manual transmission, there may be an up-shift light. This light will show you when to shift to the next higher gear for the best fuel economy. When this light comes on, you can shift to the next higher gear if weather, road, and traffic conditions let you. For the best fuel economy, accelerate slowly and shift when the light comes on. While accelerating, it is normal for the light to go on and off if you quickly change the position of the accelerator. Ignore the light when downshifting. No‐Lift Upshift (SS Models) If the vehicle has the 2.0L turbo engine and manual transmission, it has the capability of No-Lift Upshifts. This feature maximizes vehicle acceleration by allowing you to shift the transmission to a higher gear without taking your foot off the accelerator. No‐Lift Upshifting is enabled in all Electronic Stability Control modes. See Electronic Stability Control (ESC) on page 5‑6 for more information. Use this feature only when the engine has reached normal operating temperature. Correct shifting allows the engine to maintain boost pressure during shifts, while also keeping the engine from over-revving. 3-33