Removal (1.8L)

Disconnect negative battery cable. Remove alternator and power steering pump drive belts. Using Engine Support Fixture (J-28467-A), support engine. Remove upper timing belt cover. See Fig 1 .
Remove engine mount located at timing belt cover. Rotate crankshaft, and position No. 1 cylinder at TDC of compression stroke. Ensure timing mark on crankshaft pulley aligns with "0" timing mark on timing belt cover.

Fig 1: Exploded View Of Timing Belt & Components (1.8L)
Courtesy of GENERAL MOTORS CORP.
Ensure timing marks on camshaft sprockets align with cylinder head surface. See Fig 2 . Raise and support vehicle. Remove crankshaft pulley bolt. Using Puller (J-1859-03), remove crankshaft pulley from crankshaft. Remove lower timing belt cover. See Fig 1 .
Lower vehicle. Ensure timing mark (notch) on rear of crankshaft sprocket aligns with timing mark on oil pump. See Fig 2 . If belt is to be reused, mark direction of timing belt rotation for installation reference. Loosen belt tensioner bolt 1/2 turn. Rotate belt tensioner clockwise, and remove timing belt. Remove crankshaft and camshaft sprockets (if necessary).

Fig 2: Aligning Timing Marks (1.8L)

Courtesy of GENERAL MOTORS CORP.