Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
External Pages
's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle. Different variant/trim Section 1 (Engine Controls - 4.8L, 5.3L, And 6.0L - Introduction (2 Of 2)) Section 2 (Engine Controls - 6.6L - Introduction (2 Of 2)) Section 3 (Engine Controls - 4.3L - Introduction (2 Of 2)) Section 4 (Hybrid Engine Electrical System - Introduction) Section 5 (Automatic Transmission - 4L80-E/4L85-E - Introduction (2 Of 2)) Section 6 (ENGINE CONTROLS - 4.3L - DTCs P0507-P2A04) Section 7 (ENGINE CONTROLS - 4.8L, 5.3L, AND 6.0L - DTCs P0342-P1380) Section 8 (Engine Mechanical - 4.3L) Section 9 (ENGINE MECHANICAL - 4.8L, 5.3L, AND 6.0L (2 Of 4)) Section 10 (Engine Mechanical - 6.6L - On Vehicle Repair Instructions) Section 11 (Engine Controls - 4.3L - Troubleshooting & Diagnosis) Section 12 (Engine Controls - 4.8L, 5.3L, And 6.0L - Troubleshooting & Diagnosis) Section 13 (Engine Controls - 6.6L - Troubleshooting & Diagnosis) Section 14 (Transfer Case - NVG 261-NP2 - Service & Troubleshooting) Section 15 (Transfer Case - NVG 246-NP8 - Service & Diagnosis) Section 16 (Transfer Case - NVG 263-NP1 - Service & Diagnosis) Section 17 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Service, Diagnosis & Troubleshooting) Section 18 (Automatic Transmission - 4L80-E/4L85-E - Service, Diagnosis & Troubleshooting) Section 19 (Transfer Case - NVG 149-NP3 - Service & Troubleshooting) Section 20 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) Section 21 (Automatic Transmission - ALLISON - Introduction (2 Of 2)) Section 22 (Manual Transmission - NV 3500 - Service) Section 23 (Manual Transmission - NV 4500 - Service) Section 24 (Shift Lock Control System) Section 25 (ENGINE MECHANICAL - 4.8L, 5.3L, AND 6.0L (1 Of 4)) Section 26 (ENGINE CONTROLS - 4.3L - DTCs P0016-P0161) Section 27 (ENGINE CONTROLS - 6.6L - DIAGNOSIS (DTCs P0016-P0401)) Section 28 (ENGINE CONTROLS - 4.8L, 5.3L, AND 6.0L - DTCs P0030-P0131/151) Section 29 (ENGINE CONTROLS - 4.8L, 5.3L, AND 6.0L - DTCs P0132-P0341) Section 30 (ENGINE CONTROLS - 4.3L - DTCs P0140-P0506) Section 31 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - DTC P0218 To DTC P0785) Section 32 (Automatic Transmission - 4L80-E/4L85-E - DTC P0218 To P2771) Section 33 (AUTOMATIC TRANSMISSION - ALLISON - DIAGNOSTICS (DTCs P0218-P0731)) Section 34 (ENGINE CONTROLS - 6.6L - DIAGNOSIS (DTCs P0402-P2636)) Section 35 (AUTOMATIC TRANSMISSION - ALLISON - DIAGNOSTICS (DTCs P0732-P0877)) Section 36 (AUTOMATIC TRANSMISSION - ALLISON - DIAGNOSTICS (DTCs P0878-P2723)) Section 37 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - DTC P0894 To DTC P2797) Section 38 (ENGINE CONTROLS - 4.8L, 5.3L, AND 6.0L - DTCs P1381-U0107) Section 39 (AUTOMATIC TRANSMISSION - ALLISON - DIAGNOSTICS (DTCs P2724-P2771)) Section 40 (Engine Mechanical - 6.6L - Introduction) Section 41 (Automatic Transmission - ALLISON - Service, Diagnosis & Troubleshooting) Section 42 (ENGINE MECHANICAL - 4.8L, 5.3L, AND 6.0L (4 Of 4)) Section 43 (ENGINE MECHANICAL - 4.8L, 5.3L, AND 6.0L (3 Of 4)) Section 44 (Engine Mechanical - 6.6L - Off Vehicle Repair Instructions (2 Of 3)) Section 45 (Engine Mechanical - 6.6L - Off Vehicle Repair Instructions (3 Of 3)) Section 46 (Engine Mechanical - 6.6L - Off Vehicle Repair Instructions (1 Of 3)) Section 47 (Engine Controls - 4.3L - Introduction (1 Of 2)) Section 48 (Engine Controls - 4.8L, 5.3L, And 6.0L - Introduction (1 Of 2)) Section 49 (Engine Controls - 6.6L - Introduction (1 Of 2)) Section 50 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (1 Of 2)) Section 51 (Automatic Transmission - 4L80-E/4L85-E - Introduction (1 Of 2)) Section 52 (Automatic Transmission - ALLISON - Introduction (1 Of 2)) Section 53 (Engine Controls - 6.0L - CNG - Introduction (2 Of 2)) Section 54 (Engine Controls - 6.0L - CNG - Introduction (1 Of 2)) Section 55 (ENGINE CONTROLS - 6.0L - CNG - DTCs P0005-P2665) Section 56 (Maintenance And Lubrication - CNG) Section 57 (Cautions And Notices - CNG) Section 58 (Engine Controls - 6.0L - CNG - Troubleshooting & Diagnosis) Section 59 (Transfer Case - NVG 149-NP3 - Overhaul) Section 60 (Transfer Case - NVG 246-NP8 - Overhaul) Section 61 (Transfer Case - NVG 261-NP2 - Overhaul) Section 62 (Transfer Case - NVG 263-NP1 - Overhaul) Section 63 (Automatic Transmission - 4L80-E/4L85-E - Overhaul) Section 64 (Manual Transmission - NV 3500 - Overhaul) Section 65 (Manual Transmission - NV 4500 - Overhaul) Different car Section 1 (Air Bag And Supplemental Restraint System (SRS) Component Inspection & Replacement Tables) Section 2 (Supplemental Inflatable Restraint System Component Inspection & Replacement Tables.) Section 3 (Drive Axles) Section 4 (Engine Controls - Self-Diagnostics - 8.1L) Section 5 (Engine Controls Self-Diagnostics - 5.7L Corvette) Section 6 (Engine Control System Troubleshooting - No Codes) Section 7 (Supplemental Inflatable Restraint System) Section 8 (Automatic Transmission Servicing) Section 9 (Engine Controls - Service & Adjustment Specifications) Section 10 (Engine Controls - Service & Adjustment Specifications - 4.3L) Section 11 (Engine Controls - Service & Adjustment Specifications - 5.3L) Section 12 (Engine Controls - Service & Adjustment Specifications - 4.8L) Section 13 (Engine Controls - Service & Adjustment Specifications) Section 14 (Engine Controls - Service & Adjustment Specifications - 6.0L) Section 15 (Engine Controls - Service & Adjustment Specifications) Section 16 (Engine Controls - Service & Adjustment Specifications) Section 17 (Engine Control System - Service & Adjustment Specifications) Section 18 (Automatic Transaxle Servicing) Section 19 (ENGINE CONTROLS - SERVICE & ADJUSTMENT SPECIFICATIONS - 6.6L Diesel) Section 20 (Engine Controls - Service & Adjustment Specifications - 8.1L) Section 21 (Engine Control System - On-Vehicle Adjustments) Section 22 (Engine Controls - On-Vehicle Adjustments - Trucks (Except Tracker)) Section 23 (Engine Control System - Theory & Operation) Section 24 (Engine Controls - Theory & Operation) Section 25 (Engine Controls - Theory & Operation - 4.3L) Section 26 (Engine Controls - Theory & Operation - Gasoline) Section 27 (Engine Control System - Basic Diagnostic Procedures) Section 28 (Engine Control System - Self-Diagnostics) Section 29 (Automatic Transmission - ALLISON - Diagnosis) Section 30 (ENGINE CONTROLS - THEORY & OPERATION - 6.6L Diesel) Section 31 (Engine Controls - Theory & Operation - 8.1L) Section 32 (Engine Controls - Basic Diagnostic Procedures) Section 33 (Engine Controls - Basic Diagnostic Procedures - 4.3L) Section 34 (Engine Controls - Basic Diagnostic Procedures - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline Engines) Section 35 (Engine Control System - System & Component Testing) Section 36 (ENGINE CONTROLS - BASIC DIAGNOSTIC PROCEDURES - 6.0L W/BiFuel & CNG ENGINES) Section 37 (Engine Controls - Basic Diagnostic Procedures - 6.6L Diesel) Section 38 (Engine Controls - Basic Diagnostic Procedures - 8.1L) Section 39 (Engine Controls - Trouble Shooting - No Codes - 4.3L) Section 40 (Engine Controls - Trouble Shooting - No Codes - 4.3L) Section 41 (Engine Controls - Trouble Shooting - No Codes - 4.8L, 5.3L & 6.0L) Section 42 (ENGINE CONTROLS - TROUBLE SHOOTING - NO CODES - 6.0L W/BiFuel & CNG) Section 43 (Engine Controls - Trouble Shooting - No Codes - 6.6L) Section 44 (Engine Controls - Trouble Shooting - No Codes - 8.1L) Section 45 (Engine Control System - Trouble Shooting - No Codes) Sec
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.