General Motors — Timing Chain & Sprockets Installation
Repair & overhaul · timing chain and sprockets
From a General Motors service manual — check it applies to your exact model before use.
Before you start
- Failure to properly align CKP sensor reluctor ring may result in component damage and could affect system performance.
- On models equipped with CKP sensor, ensure CKP sensor is fully seated and held stationary in bore of front cover upon installation.
Procedure
- Install Woodruff key in crankshaft if removed. Using Crankshaft Sprocket Installer (J-5590), install crankshaft sprocket. Install camshaft sprocket and timing chain. Ensure timing marks on sprockets a
- Install and tighten camshaft sprocket bolts to specification.
- On models equipped with CKP sensor, install and align CKP sensor reluctor ring. Dished side of CKP reluctor ring must face engine front cover.
- Install front cover using NEW gasket. Tighten front cover bolts to specification.
- On models equipped with CKP sensor, install CKP sensor. Tighten CKP sensor hold down bolt to specification.
- Apply RTV sealant to Woodruff keyway in crankshaft balancer. Using Damper Puller/Installer (J-39046), install crankshaft balancer. Install crankshaft pulley. Install crankshaft damper bolt and cranksh
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Tighten camshaft sprocket bolts, front cover bolts, CKP sensor hold down bolt, crankshaft damper bolt and crankshaft pulley bolts to specification.
Source: General Motors service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.