Here you go, It helps to use those big black paper clip things (shown below)to hold the belt onto the sprockets when routing the belt. This is a time saver and helps keep your frustration level down.

This is the paper clip thing for the belt

Removal & Installation
3.5L Engine

1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
2. Record the radio anti theft code data.
3. Remove or disconnect the following:
   • Negative battery cable
   • Engine cover
   • Accessory drive belts
   • Idler pulley
   • Crankshaft pulley
   • Power steering pump pulley
   • Belt tensioner pulley
   • Upper and lower timing belt covers
4. Support the engine with a floor jack and remove the engine mount.
5. Rotate the engine to align the camshaft sprocket timing marks with the cylinder head cover timing marks. Timing belt routing and timing marks-3.5L Engine
6. Remove or disconnect the following:
   • Auto tensioner
   • Timing belt Timing belt and related components-3.5L Engine

To install:

1. Ensure that the engine is set to Top Dead Center (TDC).
2. Prepare the auto tensioner for installation by compressing it in a vise and installing a retaining pin.
3. Install the timing belt in the following order:
   1. Crankshaft sprocket
   2. Idler pulley
   3. Left bank exhaust camshaft sprocket
   4. Left bank intake camshaft sprocket
   5. Water pump pulley
   6. Right bank intake camshaft sprocket
   7. Right bank exhaust camshaft sprocket
   8. Tensioner pulley
4. Install the auto tensioner. Do not remove the retaining pin at this time.
5. Check that the crankshaft and camshaft timing marks are aligned correctly.
6. Rotate the crankshaft ¹/₄ turn Counterclockwise.
7. Rotate the crankshaft ¹/₄ turn Clockwise to return the engine to TDC.
8. Loosen the tensioner pulley center bolt.
9. Apply 44 inch lbs. (5 Nm) torque to the tensioner pulley as shown and tighten the center bolt to 32-41 ft. lbs. (43-55 Nm). Adjusting the tensioner pulley-3.5L Engine
10. Remove the auto tensioner retaining pin.
11. Rotate the crankshaft 2 revolutions Clockwise, then wait 5 minutes for the auto tensioner to adjust.
12. Measure the auto tensioner rod as shown. If the measurement is not 3.8-4.5 mm, then repeat the belt tensioning procedure. Measuring the auto tensioner rod-3.5L Engine
13. When the auto tensioner measurement is correct, install or connect the following:
    • Engine mount
    • Upper and lower timing belt covers
    • Belt tensioner pulley
    • Power steering pump pulley
    • Crankshaft pulley
    • Idler pulley
    • Accessory drive belts
    • Engine cover
    • Negative battery cable
14. Reprogram the radio anti theft codes.