🏷️ Basic Information Identification Make: Buick Model: Rainier Year: 2005 Generation: 1st Generation (GMT360 platform) 📋 Manual Details Product Information Manual Type: Service & Repair Manual Software Language: English Format: Online Digital Access (PDF Download compatible) Provider: RepairSurge Access Duration: 1 Year Licensing: Officially Licensed, OE Material Derived Compatibility: PC, Laptop, Smartphone, Tablet (with internet and web browser) ⚙️ Engine Specifications Engine 1 Engine Type: Inline 6-Cylinder Displacement: 4.2L (4194cc) Bore X Stroke: 3.70 in x 3.85 in (94 mm x 98 mm) Compression Ratio: 10.0:1 Fuel Delivery: Sequential Fuel Injection (SFI) Horsepower: 275 hp @ 6000 rpm Torque: 275 lb-ft @ 4800 rpm Engine 2 Engine Type: Vortec V8 Displacement: 5.3L (5328cc) Bore X Stroke: 3.78 in x 3.62 in (96 mm x 92 mm) Compression Ratio: 9.5:1 Fuel Delivery: Sequential Fuel Injection (SFI) Horsepower: 290 hp @ 5200 rpm Torque: 325 lb-ft @ 4000 rpm 🔧 Transmission Drivetrain Type: Automatic Gears: 4-speed Transfer Case: 2-speed electronic, full-time (optional) Drive Type: Rear-Wheel Drive (RWD) or All-Wheel Drive (AWD) 🔧 Maintenance Fluid Capacities Engine Oil Capacity: 7 Quarts (6.6 Liters) with filter for 4.2L I6; 7 Quarts (6.6 Liters) with filter for 5.3L V8 Coolant Capacity: 14.1 Quarts (13.3 Liters) Transmission Fluid Capacity: 11.1 Quarts (10.5 Liters) for 4L60-E Rear Axle Fluid Capacity: 3.7 Pints (1.75 Liters) for G80 differential Recommended Fluids Engine Oil Type: SAE 5W-30 Synthetic Blend Transmission Fluid Type: Dexron-III (or equivalent) Coolant Type: GM P/N 12346119 or equivalent (Orange) Service Intervals Oil Change Interval: Every 7,500 miles or 6 months, whichever comes first (under normal driving conditions) Tire Rotation Interval: Every 7,500 miles