Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

Install the crankshaft balancer key into the crankshaft keyway.
The crankshaft balancer key should be parallel to the crankshaft or with a slight incline.

Fig 1: Installing Crankshaft Balancer Key
Courtesy of GENERAL MOTORS CORP.
Align the keyway of the crankshaft sprocket with the crankshaft balancer key.
Use the J 5590 in order to install the crankshaft sprocket.

Fig 2: Using J 5590
Courtesy of GENERAL MOTORS CORP.

Important: Install the camshaft sprocket with the alignment mark at the 6 o'clock position.
Install the camshaft sprocket and the camshaft timing chain.

Fig 3: Installing Camshaft Sprocket and Timing Chain
Courtesy of GENERAL MOTORS CORP.
Look to ensure that the crankshaft sprocket is aligned at the 12 o'clock position and camshaft sprocket is aligned at the 6 o'clock position.

Fig 4: Checking Alignment of Crankshaft and Camshaft Sprockets
Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.

Important: Do not use a hammer to install the camshaft sprocket onto the camshaft. To do so may dislodge the expansion cup plug (camshaft rear bearing hole).
Install camshaft sprocket bolts.
Tighten

Tighten the camshaft sprocket bolts to 25 N.m (18 lb ft).

Fig 5: Installing Camshaft Sprocket Bolts
Courtesy of GENERAL MOTORS CORP.
Install the crankshaft position sensor reluctor ring.
1. 7.1. Align the keyway on the crankshaft position sensor reluctor ring with the crankshaft balancer key in the crankshaft.
2. 7.2. Use the J 5590 in order to push the crankshaft position sensor reluctor ring onto the crankshaft until completely seated against the crankshaft sprocket.
3. 7.3. Remove the bolt that was installed in the end of the crankshaft.
4. 7.4. Install the engine front cover. Refer to Engine Front Cover Replacement .
  
  Fig 6: J 5590
  Courtesy of GENERAL MOTORS CORP.