Engine 4.2L 6-Cylinder DOHC
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Recommended oil viscosity: 5W-30
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Oil certification: API
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Drain plug torque: 19 ft-lbs
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Oil capacity: 7.0 quarts
Spark Plug Gap
- 4.2L 6-Cylinder: 0.044''
Engine 5.3L 8-Cylinder
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Recommended oil viscosity: 5W-30
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Oil certification: API
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Drain plug torque: 19 ft-lbs
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Oil capacity: 6.0 quarts
Spark Plug Gap
- 5.3L 8-Cylinder: 0.040''
Engine 6.0L 8-Cylinder
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Recommended oil viscosity: 5W-30
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Oil certification: API
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Drain plug torque: 19 ft-lbs
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Oil capacity: 6.0 quarts
Spark Plug Gap
- 6.0L 8-Cylinder :0.040''
Fuel
- Capacity: 22.0 gal (83.3 L)
Coolant
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Type: 50/50 mixture of clean, drinkable water and use only DEX-COOL®Coolant.
- Capacity:
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4.2L L6:9.7 qt (9.2 L)
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5.3L V8 11.2 qt (10.6 L)
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6.0L V8 11.2 qt (10.6 L)
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Transfer Case Lubricant
Transmission (Drain and Refill)
- Capacity: 5.0 qt (4.7 L)
Hydraulic Brake System
- Type: Delco® Supreme 11 Brake Fluid or equivalent DOT-3 brake fluid.
Windshield Washer
- Type: Optikleen® Washer Solvent
Parking Brake Cable Guides
- Type: Chassis Lubricant (GM Part No. U.S. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Power Steering System
- Type: GM Power Steering Fluid (GM Part No. U.S. 89021184, in Canada 89021186).
Automatic Transmission
- Type: DEXRON®-VI Automatic Transmission Fluid.
Key Lock Cylinders
- Type: Multi-Purpose Lubricant, Superlube (GM Part No. U.S. 12346241, in Canada 10953474).
Chassis Lubrication
- Type: Chassis Lubricant (GM Part No. U.S. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Front Axle
- Type: SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 89021677, in Canada 89021678) meeting GM Specification 9986115.
Rear Axle (Except SS Model)
- Type: SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 89021677, in Canada 89021678) meeting GM Specification 9986115
Rear Axle (SS Model)
- Type: SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 89021677, in Canada 89021678) meeting GM Specification 9986115. With a complete drain and refill add 5.5 ounces (163 ml) of Limited-Slip Axle Lubricant Additive (GM Part No. U.S. 1052358, in Canada 992694)
Rear Driveline Center Spline and Universal Joints
- Type: Chassis Lubricant (GM Part No. U.S. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Constant Velocity Universal Joint
- Type: Chassis Lubricant (GM Part No. U.S. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor, and Release Pawl
- Type: Lubriplate Lubricant Aerosol (GM Part No. U.S. 12346293, in Canada 992723) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Powertrain

References
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2008 Chevrolet Trailblazer Owners Manual
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Chevrolet Trailblazer - Wikipedia.org
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US Department of Energy - FuelEconomy.gov
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NHTSA | National Highway Traffic Safety Administration - NHTSA.gov
Lights
Front Lights
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Front Fog Light Bulb:
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880
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893
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Front Sidemarker Light Bulb:194
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Front Turn Signal Light Bulb:
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3157-SCK
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3757AK
-
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High Beam Headlight Bulb: 9005
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Low Beam Headlight Bulb: 9006
Rear Lights
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Back Up Light Bulb:
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3157-SCK
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3157KX
-
-
Brake Light Bulb:
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3157-SC
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3157KX
-
-
Center High Mount Stop Light Bulb: LED
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License Plate Light Bulb: 2825L
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Parking Light Bulb:
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3157-SCK
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3757AK
-
-
Rear Turn Signal Light Bulb:
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3157-SCK
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3157KX
-
-
Tail Light Bulb:
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3157-SCK
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3157KX
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Interior Lights
-
Courtesy Light Bulb: 194
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Dome Light Bulb: 212-2
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Glove Box Light Bulb: 194
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Luggage Compartment Light Bulb: 212-2
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Map Light Bulb: 2825L
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Vanity Mirror Light Bulb: 7065