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reposition the reluctor wheel to the PARK position. Inspect for proper alignment of Nicked or damaged edges (3) on the CMP reluctor wheel Damaged timing chain teeth (4) Fig. 77: View Of Oil Passages
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
6. Inspect the CMP actuator for dirt, debris, or restrictions within the oil passages (1, 2, 3). Fig. 78: View Of Timing Chain Tensioner Inspection Points 7. Inspect the timing chain tensioner for the following conditions: Damaged or broken tension spring (1) Excessive wear or scoring on the chain guide surfaces (2, 3) CAMSHAFT POSITION ACTUATOR MAGNET CLEANING AND INSPECTION
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 79: Measuring Retracted Position 1. Inspect the CMP magnet for the following conditions: A damaged electrical connector An accumulation of dirt or debris in the recessed area around the pintle A build-up of burnt engine oil on the shaft of the pintle which may cause the pintle to IMPORTANT: Do not energize the camshaft position (CMP) magnet using a 12-volt power supply.
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
stick and not move freely within the proper range of travel 2. Holding the CMP magnet with the pintle facing upward, measure the pintle retracted position (a). Record the dimension. Fig. 80: Measuring The Pintle Extended Position 3. Holding the CMP magnet with the pintle facing downward, measure the pintle extended position (a). Record the dimension. 4. Subtract the retracted dimension from the extended dimension to determine pintle travel. A properly moving pintle will travel 3.0-5.5 mm (0.12-0.22 in).
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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