This procedure requires a special balancer installation tool and a new harmonic balancer bolt, so it is important to read through the entire process and gather the necessary tools and materials beforehand. Begin by disconnecting the cable from the negative terminal of the battery. Next, raise the front of the vehicle and support it securely on jackstands, then apply the parking brake. Remove the drivebelt, air conditioning compressor belt, and, for 5.3L/6.2L models, the vacuum pump belt, followed by the cooling fan and shroud assembly. Working under the vehicle, remove the stone shield from below the engine if equipped, and then remove the starter motor. Install a driveplate holding tool into the ring gear teeth and bolt it to the engine block. Use a puller to remove the balancer from the crankshaft, ensuring the puller jaws only contact the hub of the balancer and not the outer ring. Insert the proper adapter or a long Allen-head bolt into the crankshaft nose for the puller's tapered tip to push against, preventing damage to the crankshaft threads. Position the crankshaft pulley/harmonic balancer on the crankshaft and slide it on as far as it will go, then use the balancer installation tool to press it onto the crankshaft. Install the old harmonic balancer bolt and tighten it to the specified torque, then measure the distance from the snout of the crankshaft to the balancer hub; the hub should extend 3/32 to 11/64-inch past the crankshaft snout. If the measurement is incorrect, reinstall the balancer installation tool and press the balancer on until the measurement is correct. Finally, install a new harmonic balancer bolt and tighten it to the specified torque and angle of rotation, completing the installation by reversing the removal steps.