I am fairly sure that the Astra G (Mk 4) models withoutABS have the speed sensor in the gearbox, and the ABS models take the road speed from the left-hand front wheel hub. Unfortunately, the gearboxes fitted to ABS models have the speed sensor hole plugged, so this is something to consider if replacing the gearbox.
MK4 OR ASTRA G mk 3
The Opel Astra (Lat: Stars) is a small family car (C-segment in Europe}. After the Astra F was replaced by the new generation Astra G in 1998, the so-called crash tests the Astra earned a Good overall score in frontal impacts.
The Air bag module is located under the center console. There are many sesnors in the car to detect acceleration and g-force values.
This is the Vauxhall/Opel Astra "G" sometimes known as the Mark 4
at the back of the engine bay.
The Astra G is a small sized family car. It is designed and manufactured by the German car company Opel since 1991. This specific car is not manufactured or supplied to the United States.
On the Astra G (1998-2003) it is under a cover in the center console under the emergency brake handle.
its glued on i cut mine off with a stanley blabe.
The g-sensor calibration for a cellphone is what allows you to move the display on your phone without pushing buttons.
yes ! yes ! it has..... G sensor i.e the motion sensor.
under the handbrake, remove panel and U see it