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[Web Creator] [LMSOFT]
VX Commodore Suspension and Steering Issues
Phoenix Mechanical
Soaring

Steering Knock - After long drives, or high operating temperatures, some VX's have an audible clunk in the front end, that may be felt throught the steering wheel on turns. A possible cause can be excessive movement of the inner tierod end of the steering rack. A revised tierod was introduced into new steering racks early in 2001.


Power Steering Rack - Part number 92092815

Variable Effort Power Steering Rack (Option NV7) - Part number 92092816

Variatronic Steering Intermittent - Variatronic steering is a speed sensitive power steering system, that provides reduced steering effort at low vehicle speeds, and is usually only fitted to higher end models. This system is controlled by the the BCM (Body Control module) in conjunction with a pressure solenoid located on the steering rack. Some Variatronic Steering Systems may operate erratically, causing heavy steering at low vehicle speeds.

A possible cause for variatronic steering issues can be the BCM. A revised BCM (recalibrated) was introduced to help rectify erratic variatronic functions in VX's.

Steering Leaks - Some VX's have developed minor leaks from the low pressure power steering return line. An improved hose clamp and revised flexible hoses have been introduced early in 2001.

Steering Rack Boots (Gen III) - Some VX steering rack boots may be damaged by excessive heat from the exhaust system. VX's with extractors are more susceptible to heat damage. Revised silicone steering rack boots were released and are more durable.

Steering Rack Boot - Part number 92146712

Strut Noises - On certain road conditions such as gravel or loose surfaces, small stones and dirt can enter into the front strut upper support bearing. This may lead to noises or grinding while steering. GMH have introduced a foam dust seal to help reduce this problem.
Front Strut Bearing Dust Shield - Part number 92144452

Rear Suspension Drone - Some VX's V8 Automatics may develope a moan or drone noise at 105-110km/h, which can often be similar to an exhaust resonance. This noise may be caused by vibrations from the rear suspension cross member. A revised cross member with vibration dampers was introduced during VX production (August 2002).

Cross Member Assembly - Part number 92145688
Damper - Part number 92115982
Damper Bolt - Part number 11098391
Damper Nut - Part number 11095804
Damper Washer - Part number 92001572

Front Sway bar links - VX front sway bar links are rubber mounted to the strut housing. These rubbers are a common failure, as they can over squash and split. New rubbers were introduced early 2003, made of revised rubber with increased hardness, reduced compression set and improved high temperature performance.

Sway Bar link bush - Part number 92159373