2011 GMC Canyon Regular Cab Owner's Manual - Page 263

Vehicle Care When to Add Engine Oil See "Selecting the Right Engine Oil" for an explanation of what kind of oil to use. For engine oil crankcase capacity, see Capacities and Specifications on page 12‑2. Notice: Do not add too much oil. Oil levels above or below the acceptable operating range shown on the dipstick are harmful to the engine. If you find that you have an oil level above the operating range, i.e. the engine has so much oil that the oil level gets above the cross-hatched area that shows the proper 10-11 operating range, the engine could be damaged. You should drain out the excess oil or limit your driving of the vehicle and seek a service professional to remove the excess amount of oil. See Engine Compartment Overview on page 10‑6 for the location of the engine oil fill cap. Add enough oil to put the level somewhere in the proper operating range. Push the dipstick all the way back in when through. L4 and L5 Engines V8 Engine If the oil is below the cross-hatched area at the tip of the dipstick, add one liter/quart of the recommended oil and then recheck the level.