Chevrolet 2006 Avalanche Owner's Manual page 91

4. With the rear glass tilted at an angle, place the
bottom edge in the lower channel of the window
frame.
5. Apply a firm downward pressure and then push the
rear glass flat against the window frame. Use the
grab handles at the top of the rear glass to
assist you.
Be sure to align the rear
glass side-to-side using
the alignment arrows (G).
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