External Pages These are pages that do not belong to the exact selected vehicle (2025 GMC Sierra 1500 AT4, 3.0L Eng VIN 8), 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 (Automatic Transmission - 8L80 (MFC) - Repair Instructions - On Vehicle) Section 2 (Engine Controls And Fuel - 2.7L (L3B) - Specifications) Section 3 (Automatic Transmission - 8L80 (MFC) - Specifications) Section 4 (Automatic Transmission - 8L80 (MFC) - Diagnostic Information And Procedures) Section 5 (Automatic Transmission - 8L80 (MFC) - Special Tools And Equipment) Section 6 (Engine Controls And Fuel - 2.7L (L3B) - Repair Instructions (1 Of 2)) Section 7 (Engine Mechanical - 2.7L (L3B) - Specifications) Section 8 (Engine Mechanical - 2.7L (L3B) - Repair Instructions (4 Of 6)) Section 9 (Engine Mechanical - 2.7L (L3B) - Repair Instructions (1 Of 6)) Section 10 (Engine Mechanical - 2.7L (L3B) - Repair Instructions (5 Of 6)) Section 11 (Engine Mechanical - 2.7L (L3B) - Repair Instructions (3 Of 6)) Section 12 (Engine Mechanical - 2.7L (L3B) - Repair Instructions (6 Of 6)) Section 13 (Engine Mechanical - 2.7L (L3B) - Repair Instructions (2 Of 6)) Section 14 (Engine Mechanical - 2.7L (L3B) - Description And Operation) Section 15 (Engine Mechanical - 5.3L (L84), 6.2L (L87) - Special Tools And Equipment) Section 16 (Engine Controls And Fuel - 5.3L (L84), 6.2L (L87) - Repair Instructions (1 Of 4)) Section 17 (Engine Controls And Fuel - 5.3L (L84), 6.2L (L87) - Specifications) Section 18 (Engine Mechanical - 5.3L (L84), 6.2L (L87) - Description And Operation) Section 19 (Engine Mechanical - 5.3L (L84), 6.2L (L87) - Schematic Wiring Diagrams) Section 20 (Engine Controls And Fuel - 5.3L (L84), 6.2L (L87) - Repair Instructions (4 Of 4)) Section 21 (Engine Controls And Fuel - 5.3L (L84), 6.2L (L87) - Repair Instructions (2 Of 4)) Section 22 (Engine Mechanical - 2.7L (L3B) - Diagnostic Information And Procedures) Section 23 (Engine Mechanical - 5.3L (L84), 6.2L (L87) - Diagnostic Information And Procedures) Section 24 (Engine Controls And Fuel - 2.7L (L3B) - Diagnostic Information And Procedures (1 Of 4)) Section 25 (Engine Controls And Fuel - 2.7L (L3B) - Description And Operation) Section 26 (Engine Controls And Fuel - 2.7L (L3B) - Schematic Wiring Diagrams) Section 27 (Engine Controls And Fuel - 2.7L (L3B) - Repair Instructions (2 Of 2)) Section 28 (Engine Controls And Fuel - 2.7L (L3B) - Special Tools And Equipment) Section 29 (Engine Controls And Fuel - 2.7L (L3B) - Diagnostic Information And Procedures (2 Of 4)) Section 30 (Engine Controls And Fuel - 2.7L (L3B) - Diagnostic Information And Procedures (4 Of 4)) Section 31 (Engine Controls And Fuel - 2.7L (L3B) - Diagnostic Information And Procedures (3 Of 4)) Section 32 (Engine Mechanical - 2.7L (L3B) - Special Tools And Equipment) Section 33 (Engine Controls And Fuel - 5.3L (L84), 6.2L (L87) - Description And Operation) Section 34 (Engine Controls And Fuel - 5.3L (L84), 6.2L (L87) - Special Tools And Equipment) Section 35 (Engine Controls And Fuel - 5.3L (L84), 6.2L (L87) - Repair Instructions (3 Of 4)) Section 36 (Engine Controls And Fuel - 5.3L (L84), 6.2L (L87) - Schematic Wiring Diagrams) Section 37 (Automatic Transmission - 8L80 (MFC) - Schematic Wiring Diagrams) Section 38 (Automatic Transmission - 8L80 (MFC) - Description And Operation) Section 39 (Engine Mechanical - 2.7L (L3B) - Visual Identification) Section 40 (Engine Mechanical - 5.3L (L84), 6.2L (L87) - Visual Identification) Section 41 (Engine Controls And Fuel - 5.3L (L84), 6.2L (L87) - Diagnostic Information And Procedures (2 Of 2)) Section 42 (Engine Controls And Fuel - 5.3L (L84), 6.2L (L87) - Diagnostic Information And Procedures (1 Of 2)) Section 43 (Engine Mechanical - 2.7L (L3B) - Schematic Wiring Diagrams) Section 44 (Automatic Transmission - 8L80 (MFC) - Repair Instructions - Off Vehicle) Section 45 (Automatic Transmission - 8L80 (MFC) - Component Locator) Different car