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 (Manual Transmission - ZF S6-650 - Unit Repair Overhaul) Section 2 (Engine Mechanical - 4.3L - Service, Repair And Diagnostics) Section 3 (Engine Mechanical - 8.1L - Service, Repair And Diagnostics) Section 4 (Automatic Transmission - 4L60-E - Service, Repair And Diagnostics) Section 5 (Automatic Transmission - ALLISON - Repair Instructions - On Vehicle) Section 6 (Transfer Case - NVG 236/246-NP8 (Two Speed Automatic) - Service, Repair And Diagnostics) Section 7 (Manual Transmission - NV 3500 - Service, Repair And Diagnostics) Section 8 (Manual Transmission - NV 4500 - Service, Repair And Diagnostics) Section 9 (Engine Controls - 4.3L - Repair Instructions) Section 10 (Engine Controls - 8.1L - Repair Instructions) Section 11 (Engine Mechanical - 6.6L - Service, Repair And Diagnostics) Section 12 (Manual Transmission - ZF S6-650 - Service, Repair And Diagnostics) Section 13 (Engine Controls - 4.3L - Diagnostic Information And Procedures And DTC P0101 To DTC P0410) Section 14 (Engine Controls - 6.6L - Diagnostic Information And Procedures And DTC P0087 To DTC P0543) Section 15 (Engine Controls - 8.1L - Diagnostic Information And Procedures And DTC P0101 To DTC P0449) Section 16 (Manual Transmission Clutch System) Section 17 (Automatic Transmission - ALLISON - Diagnostic Information And Procedures) Section 18 (Transfer Case - NVG 261-NP2 (Two Speed Manual) - Service, Repair And Diagnostics) Section 19 (Transfer Case - NVG 263-NP1 (SELECTABLE) - Service, Repair And Diagnostics) Section 20 (Automatic Transmission - 4L60-E - Unit Repair Overhaul & Hydraulic Diagrams) Section 21 (Engine Mechanical - 4.3L - Unit Repair Overhaul) Section 22 (Engine Mechanical - 8.1L - Unit Repair Overhaul) Section 23 (Engine Mechanical - 6.6L - Unit Repair Overhaul) Section 24 (Engine Controls - 6.6L - Special Tools And Equipment - Special Tools) Section 25 (Manual Transmission - NV 3500 - Unit Repair Overhaul) Section 26 (Engine Controls - 6.6L - Repair Instructions) Section 27 (Automatic Transmission - ALLISON - Special Tools And Equipment - Special Tools) Section 28 (Automatic Transmission - ALLISON - Unit Repair Overhaul) Section 29 (Manual Transmission - NV 4500 - Unit Repair Overhaul) Section 30 (Engine Controls - 6.6L - DTC P0601 To DTC U2106 And Diagnosis And Trouble Shooting) Section 31 (Engine Controls - 8.1L - DTC P0452 To DTC P1781 And Diagnosis And Trouble Shooting) Section 32 (Engine Controls - 4.3L - Specifications) Section 33 (Engine Controls - 4.3L - Schematic And Routing Diagrams) Section 34 (Engine Controls - 4.3L - Component Locator) Section 35 (Engine Controls - 4.3L - DTC P0418 To DTC P1639 And Troubleshooting And Diagnosis) Section 36 (Engine Controls - 4.3L - Description And Operation) Section 37 (Engine Controls - 4.3L - Special Tools And Equipment - Special Tools) Section 38 (Engine Controls - 8.1L - Special Tools And Equipment) Section 39 (Engine Controls - 6.6L - Specifications) Section 40 (Engine Controls - 6.6L - Schematic And Routing Diagrams) Section 41 (Engine Controls - 6.6L - Component Locator) Section 42 (Engine Controls - 6.6L - Description And Operation) Section 43 (Engine Controls - 8.1L - Specifications) Section 44 (Engine Controls - 8.1L - Schematic And Routing Diagrams) Section 45 (Engine Controls - 8.1L - Component Locator) Section 46 (Engine Controls - 8.1L - Description And Operation) Section 47 (Automatic Transmission - ALLISON - Schematic And Routing Diagrams) Section 48 (Automatic Transmission - ALLISON - Specifications) Section 49 (Automatic Transmission - ALLISON - Component Locator) Section 50 (Automatic Transmission - ALLISON - Description And Operation) Different car Section 1 (Engine Mechanical - 6.5L V8 Diesel) Section 2 (System Wiring Diagrams - 1500) Section 3 (System Wiring Diagrams - 2500) Section 4 (System Wiring Diagrams - 2500 Hd) Section 5 (System Wiring Diagrams - 3500) Section 6 (Automatic Transmission - 4L60-E/4L65-E - Overhaul & Testing) Section 7 (Wiring Systems (General Information)) Section 8 (Engine Mechanical - 4.8L, 5.3L, & 6.0L (Unit Repair)) Section 9 (Engine Cooling System) Section 10 (Engine Controls - 6.5L (L65) (Introduction)) Section 11 (Theft Deterrent) Section 12 (Engine Controls - 6.5L - Diagnosis (DTC P0251 To DTC P1656) Section 13 (Engine Controls - 6.5L - Diagnostic Information & Procedures) Section 14 (Engine Controls - 6.5L - Troubleshooting) Section 15 (Engine Controls - 6.5L - Diagnosis (DTC P0112 To DTC P0238)
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.