Removal Procedure
- Remove the camshaft drive sprockets. Refer to
Camshaft Drive Sprocket Replacement
.
- Remove the timing belt tensioner locking
nut, washer and pulley.
- Disconnect the knock sensor pigtail (1)
from the bracket.
Important: The knock sensor pigtail is guided past the rear timing belt cover by several
retaining clips.
Note the positioning of the knock sensor pigtail.
- Remove the knock sensor pigtail from the retaining clips on the rear timing
belt cover.
- Remove the rear timing belt cover bolts.
- Remove the rear timing belt cover threaded pin (1).
- Remove the rear timing belt cover.
Installation Procedure
Important: Ensure the knock sensor pigtail does not get pinched between the rear timing
belt cover and the engine.
- Position the rear timing belt cover to the engine.
Notice: Refer to Fastener Notice in the Preface section.
- Install the rear timing belt cover bolts.
Tighten
Tighten the rear timing belt cover bolts to 8 N·m (71 lb in).
- Coat the threaded pin (1) with thread locking compound, GM P/N 12345382
(Canadian P/N 10953489), or equivalent.
- Install the rear timing belt cover threaded pin (1).
Tighten
Tighten the rear timing belt cover threaded pin to 10 N·m (89 lb in).
Important: The knock sensor pigtail is guided past the rear timing belt cover by several
retaining clips.
Route the knock sensor pigtail as noted during removal.
- Install the knock sensor pigtail into the retaining clips. Ensure that the
pigtail does not contact any moving parts.
- Connect the knock sensor pigtail (1) to the bracket.
- Install the timing belt tensioner pulley,
washer and locking nut.
The locking nut will be tighten to specifications after all final adjustments
are made.
- Install the camshaft drive sprockets. Refer to
Camshaft Drive Sprocket Replacement
.