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.
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HOMESERVICE MANUALSPONTIAC2009G8 BASEREPAIR AND DIAGNOSISSUSPENSIONWHEEL ALIGNMENT SYSTEMREPAIR INSTRUCTIONSWHEEL ALIGNMENT MEASUREMENT
2009 Pontiac G8 Base
Wheel Alignment Measurement
2009 Pontiac G8 BaseSECTION Wheel Alignment Measurement
- Wheel and Tyre imbalance. Refer to Tire and Wheel Assembly Balancing - Off Vehicle or Tire and Wheel Assembly Balancing - On-Vehicle
- Tyre lead due to wear, incorrectly manufactured or incorrectly mounted tyres. Refer to Radial Tire Lead/Pull Correction .
- Before performing any adjustments affecting wheel alignment, perform the following inspections and adjustments in order to ensure correct alignment readings.
IMPORTANT:
Steering and vibration concerns are not always the result of incorrect alignment. Other causes could include:
- Inspect tyres for correct inflation. Refer to Tire Inflation Pressure Specifications .
- Inspect tyres for irregular wear. Refer to Tire Diagnosis - Irregular or Premature Wear .
- Inspect the run out of the wheels and tyres. Refer to Tire and Wheel Assembly Runout Measurement - On-Vehicle .
- Inspect the wheel hub end float.
- For front wheel hub Refer to Front Wheel Hub Assembly Inspection
- For rear wheel hub Refer to Rear Wheel Hub Assembly Inspection
- Inspect the front suspension and steering ball joints for wear and damage. Refer to Ball Joint Inspection .
- Inspect the suspension control arms and stabiliser bar for wear and damage.
- Inspect the steering gear for looseness.
- Inspect the struts/shock absorbers for wear and damage. Refer to Suspension Strut and Shock Absorber Testing - On Vehicle .
- Inspect the vehicle trim height. Refer to Trim Height Inspection .
- Inspect the steering wheel for excessive drag or poor return due to stiff or binding suspension components.
- Inspect the fuel level. The fuel tank should be full or the vehicle should have compensating load added.
IMPORTANT:
Give consideration to excess loads such as tool boxes, sample cases, etc. If normally carried in the vehicle, these items should remain in the vehicle during the alignment adjustments. Give consideration also to the condition of the equipment being used for the alignment. Follow the equipment manufacturer's instructions.
Perform the following steps to measure the front and rear alignment angles:
Perform the following steps to measure the front and rear alignment angles:
RENDER: 1.0x
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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.