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Content .. 1876 1877 1878 1879 ..
ENGINE NOISE UNDER LOAD The connecting rod bearings The connecting rods The crankshaft The crankshaft journals Excessive crankshaft bearing clearance Inspect the following components and repair, The crankshaft bearings The crankshaft journals Incorrect piston, piston pin, and connecting 1. Verify the pistons, piston pins and connecting rods are installed correctly. 2. Repair, as required. Cause Correction Low oil pressure 1. Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing. 2. Repair or replace, as required. Detonation or spark knock Verify the correct operation of the ignition Loose torque converter bolts 1. Inspect the torque converter bolts and flex plate. 2. Repair, as required. Cracked flex plate - automatic transmission 1. Inspect the flex plate bolts and flex plate. 2. Repair, as required. Excessive connecting rod bearing clearance Inspect the following components and repair, The connecting rod bearings The connecting rods
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
ENGINE WILL NOT CRANK - CRANKSHAFT WILL NOT ROTATE The crankshaft Excessive crankshaft bearing clearance Inspect the following components and repair, The crankshaft bearings The crankshaft journals The cylinder block crankshaft bearing Cause Correction Seized accessory drive system component 1. Remove the accessory drive belts. 2. Confirm that the engine will rotate. Rotate the crankshaft by hand at the 3. Repair or replace the components, as required. Seized automatic transmission torque 1. Remove the torque converter-to-flex plate bolts. 2. Confirm that the engine will rotate. Rotate the crankshaft by hand at the 3. Repair or replace the components, as required. Broken timing chain 1. Inspect the timing chain and sprockets. 2. Repair or replace the components, as required. Seized timing chain or timing sprockets 1. Inspect the timing chain and sprockets for foreign material or a seized chain. 2. Repair or replace the components, as required. Seized or broken camshaft 1. Inspect the camshaft and the camshaft bearings.
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
2. Repair or replace the components, as required. Bent valve in the cylinder head 1. Inspect the valves and the cylinder heads. 2. Repair or replace the components, as required. Seized oil pump 1. Inspect the oil pump assembly. 2. Repair or replace, as required. Hydraulically locked cylinder Coolant/antifreeze in the cylinder Oil in the cylinder Fuel in the cylinder 1. Remove the spark plugs and inspect for fluid in the cylinder. When rotating the 2. Inspect for failed/broken head gaskets. 3. Inspect for a cracked engine block or cylinder head. 4. Inspect for a sticking fuel injector. 5. Repair or replace the components, as required. Material in the cylinder Broken valve Broken piston rings Piston material Foreign material 1. Inspect the cylinder for damaged components and/or foreign materials. 2. Repair or replace the components, as required. Seized crankshaft or connecting rod bearings 1. Inspect crankshaft and connecting rod bearings. 2. Repair or replace the components, as required. Bent or broken connecting rod 1. Inspect the connecting rods. 2. Replace the piston and pin as an assembly, as required. Broken crankshaft 1. Inspect the crankshaft.
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
COOLANT IN COMBUSTION CHAMBER COOLANT IN ENGINE OIL 2. Repair or replace the components, as required. Cause Correction DEFINITION: Excessive white smoke and/or coolant type odor coming from the exhaust 1. A slower than normal cranking speed may indicate coolant entering the combustion chamber. Refer to Engine Will Not Crank - Crankshaft Will Not Rotate. 2. Remove the spark plugs and inspect for spark plugs saturated by coolant or coolant in the cylinder bore. 3. Inspect by performing a cylinder leak-down test. During this test, excessive air bubbles within the coolant may indicate a faulty gasket or damaged component. 4. Inspect by performing a cylinder compression test. Two cylinders side-by-side on the engine block, with low compression, may indicate a failed cylinder head gasket. Refer Faulty cylinder head gasket Replace the head gasket and components, as Warped cylinder head Machine the cylinder head to the proper Cracked cylinder head Replace the cylinder head and gasket. Cracked cylinder liner or engine block Replace the components, as required. Cylinder head or engine block porosity Replace the components, as required. Cause Correction DEFINITION: Foamy or discolored oil or an engine oil overfill condition may indicate
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
Content .. 1876 1877 1878 1879 ..
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