External Pages These are pages that do not belong to the exact selected vehicle (2001 GMC Sierra 1500 HD, RWD), but are still accessible from a link in your vehicle's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle.
Expand All (for easy ctrl-f) Collapse All 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) Section 51 (EGR Function Testing - Diesel General Motors) Different car