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Fig. 17: Vehicle Identification Number (VIN) The vehicle identification number (VIN) is located on the left side rear of the engine block (1) The first digit identifies the division. The second digit identifies the model year. The third digit identifies the assembly plant.
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
The fourth through ninth digits are the last 6 digits of the VIN. DIAGNOSTIC INFORMATION AND PROCEDURES DIAGNOSTIC STARTING POINT - ENGINE MECHANICAL Begin the system diagnosis by reviewing the Disassembled Views, Engine Content SYMPTOMS - ENGINE MECHANICAL Strategy Based Diagnostics 1. Perform the Diagnostic System Check - Vehicle before using the symptom tables. 2. Review the system operations in order to familiarize yourself with the system functions. Refer to Disassembled Views, Engine Content Specifications, Engine Component 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. Refer to Inspect the easily accessible or visible system components for obvious damage or conditions
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
which could cause the symptom. Inspect 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 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 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 Coolant in Combustion Chamber Coolant in Engine Oil Cylinder Deactivation (Active Fuel Management) System Diagnosis Engine Compression Test Cylinder Deactivation (Active Fuel Management) System Compression Test Cylinder Leakage Test Oil Consumption Diagnosis Oil Pressure Diagnosis and Testing
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
Cylinder Deactivation (Active Fuel Management) Oil Pressure Relief Valve Cylinder Deactivation (Active Fuel Management) Valve Lifter Oil Manifold Camshaft Position Actuator and Solenoid Valve Diagnosis and Testing Oil Leak Diagnosis Crankcase Ventilation System Inspection/Diagnosis
Drive Belt Falls Off and Excessive Wear Diagnosis Drive Belt Tensioner Diagnosis BASE ENGINE MISFIRE WITHOUT INTERNAL ENGINE NOISES Cause Correction Fuel injector harness connectors are Relocate the fuel injector harness connectors, Abnormalities, such as severe cracking, Replace the drive belt. Refer to Drive Belt Worn, damaged, or mis-aligned accessory Inspect the components and repair or replace, Loose or improperly installed engine flex Repair or replace the flex plate and/or Restricted exhaust system Repair or replace, as required.
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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