Home/Chevrolet/Silverado 3500/Chevrolet Silverado 3500 (2002-2006)/Repair manual/Testing & Diagnostics/Engine Controls - 8.1L (Introduction): Specifications

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Wiring diagrams Section: Testing & Diagnostics

Engine Controls - Strategy Based Engine Diagnosis

Engine Controls - 4.8L, 5.3L, & 6.0L (Diagnostic Information & Procedures): Overview
Engine Controls - 4.8L, 5.3L, & 6.0L (Diagnostic Information & Procedures): Diagnosis

Engine Controls - 6.0L - Alternative Fuels (Diagnostic Information & Procedures): Overview
Engine Controls - 6.0L - Alternative Fuels (Diagnostic Information & Procedures): Diagnosis

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Engine Controls - 8.1L (Introduction): Specifications Chevrolet Silverado 3500

Testing & Diagnostics

Ignition System Specifications

Application	Specification
Application	Metric	English
Firing Order	1-8-7-2-6-5-4-3
Spark Plug Wire Resistance	1,000 ohms per ft
Spark Plug Torque	20 N.m	15 lb ft
Spark Plug Gap	1.52 mm	0.060 in
Spark Plug Type	TJ14R-P15 Denso plug type

Ignition System Specifications

Fastener Tightening Specifications

Application	Specifications
Application	Metric	English
Accelerator Pedal Nut	20 N.m	15 lb ft
Air Cleaner Resonator Outlet Duct Clamp	4 N.m	35 lb in
Brake Pipe Fitting	25 N.m	18 lb ft
Camshaft Position (CMP) Sensor Bolt	12 N.m	106 lb in
Crankshaft Position (CKP) Sensor Bolt	12 N.m	106 lb in
Electro-Hydraulic Control Unit Bracket Bolt	25 N.m	18 lb ft
Engine Coolant Temperature (ECT) Sensor	50 N.m	37 lb ft
Engine Shield Bolt	20 N.m	15 lb ft
Engine Wire Harness Bolt/Stud	10 N.m	89 lb in
Evaporative Emission (EVAP) Canister Nut	25 N.m	18 lb ft
Evaporative Emission (EVAP) Canister Purge Valve Bolt	10 N.m	89 lb in
Evaporative Emission (EVAP) Canister Vent Solenoid Bracket Bolt	12 N.m	106 lb in
Fuel Feed and EVAP Bundle Nut	12 N.m	106 lb in
Fuel Fill Pipe Clamp	2.5 N.m	22 lb in
Fuel Pipe Bracket Nut	10 N.m	89 lb in
Fuel Rail Stud	12 N.m	106 lb in
Fuel Tank Filler Housing to Body Screw	2.3 N.m	20 lb in
Fuel Tank Filler Pipe Housing to Fuel Tank Fill Pipe Screw	2.3 N.m	20 lb in
Fuel Tank Ground Strap Bolt	9 N.m	80 lb in
Fuel Tank Shield Bolt	18 N.m	13 lb ft
Fuel Tank Strap Bolt	40 N.m	30 lb ft
Heated Oxygen Sensor (HO2S)	42 N.m	31 lb ft
Ignition Coil Bolt	12 N.m	106 lb in
Knock Sensor	20 N.m	15 lb ft
Manifold Absolute Pressure (MAP) Sensor Bolt	12 N.m	106 lb in
Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor Clamp	7 N.m	62 lb in
Powertrain Control Module (PCM) Electrical Connector Bolt	8 N.m	71 lb in
Spark Plug (Existing Head)	20 N.m	15 lb ft
Spark Plug (New Head)	30 N.m	22 lb ft
Throttle Actuator Control Module Bracket Nut	9 N.m	80 lb in
Throttle Actuator Control Module Nut	9 N.m	80 lb in
Throttle Body Nut	10 N.m	89 lb in

Fastener Tightening Specifications

See also:
• Service Programming System (SPS)