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Fig. 43: View Of Engine Identification Tag The engine identification tag is located on the left side of the block. It is on the front edge of the DIAGNOSTIC INFORMATION AND PROCEDURES DIAGNOSTIC STARTING POINT - ENGINE MECHANICAL Begin the system diagnosis by reviewing the Disassembled Views, Engine Component
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
the description and operation information will help you determine the correct symptom SYMPTOMS - ENGINE MECHANICAL Strategy Based Diagnostics 1. Perform the Diagnostic Starting Point - Engine Controls before using the symptom tables, if applicable. 2. Review the system operations in order to familiarize yourself with the system functions. Refer to Disassembled Views, Engine Component Description, and Lubrication All diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform Visual/Physical Inspection Inspect for aftermarket devices which could affect the operation of the engine. Inspect the easily accessible or visible system components for obvious damage or conditions Check for the correct oil level, proper oil viscosity, and correct filter application. Verify the exact operating conditions under which the concern exists. Note factors such as Compare the engine sounds, if applicable, to a known good engine and make sure you are Intermittent Test the vehicle under the same conditions that the customer reported in order to verify the system Symptom List Refer to a symptom diagnostic procedure from the following list in order to diagnose the
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
symptom: Base Engine Misfire without Internal Engine Noises Base Engine Misfire with Abnormal Internal Lower Engine Noises Base Engine Misfire with Abnormal Valve Train Noise Base Engine Misfire with Coolant Consumption Base Engine Misfire with Excessive Oil Consumption Engine Compression Test Engine Noise on Start-Up, but Only Lasting a Few Seconds Upper Engine Noise, Regardless of Engine Speed Lower Engine Noise, Regardless of Engine Speed Engine Noise Under Load Engine Will Not Crank - Crankshaft Will Not Rotate Oil Pressure Diagnosis and Testing Oil Leak Diagnosis Drive Belt Rumbling and Vibration Diagnosis Drive Belt Rumbling and Vibration Diagnosis Drive Belt Falls Off and Excessive Wear Diagnosis Drive Belt Tensioner Diagnosis BASE ENGINE MISFIRE WITHOUT INTERNAL ENGINE NOISES Condition Action Abnormalities (severe cracking, bumps or Abnormalities in the accessory drive belt 1. Inspect the accessory drive components. 2. Repair or replace all damaged components. Loose and/or damaged crankshaft balancer A misfire code may be present without an
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
1. Inspect crankshaft balancer and balancer bolt. 2. Repair or replace all damaged components. Loose torque converter bolts A misfire code may be present without an 1. Inspect torque converter bolts and flywheel. 2. Repair or replace all damaged components. Loose and/or damaged flywheel A misfire code may be present without an 1. Inspect flywheel and flywheel attaching bolts. 2. Repair or replace all damaged components. Restricted exhaust system A severe restriction in the exhaust flow can Air in fuel system 1. Inspect fuel filter, fuel system for leaks and/or restrictions. 2. Repair or replace all damaged components. Bent and/or worn valve pushrod 1. Inspect valve pushrod and valve rocker arm. 2. Repair or replace all damaged components. Sticking valve Carbon on the valve stem or valve seat may 1. Inspect valves and valve guides. 2. Repair or replace all damaged
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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