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ENGINE WILL NOT CRANK - CRANKSHAFT WILL NOT ROTATE as required. Worn, damaged, or improperly installed 1. Inspect the crankshaft bearings. 2. Inspect the crankshaft journals. 3. Repair or replace damaged components as required. Cause Correction Seized accessory drive system component 1. Remove accessory drive belts. 2. Rotate crankshaft by hand at the balancer or flywheel location. Hydraulically locked cylinder Coolant/antifreeze in cylinder Oil in cylinder Fuel in cylinder 1. Remove spark plugs and check for fluid. 2. Inspect for broken head gasket. 3. Inspect for cracked engine block or cylinder head. 4. Inspect for a sticking fuel injector. Seized automatic transmission torque 1. Remove the torque converter bolts. 2. Rotate crankshaft by hand at the balancer or flywheel location. Seized manual transmission 1. Disengage the clutch. 2. Rotate crankshaft by hand at the balancer or flywheel location. Broken timing chain and/or gears Inspect timing chain and gears. Repair as required. Seized balance shaft Inspect balance shaft. Repair as required. Material in cylinder Broken valve Piston material Foreign material Inspect cylinder for damaged Repair or replace as required. Seized crankshaft or connecting rod bearings Inspect crankshaft and connecting rod
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
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