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Frame Reference Point Description

WARNING: This page is about a different car, the 2005 GMC Canyon and 2005 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.

Reference points are locations on a vehicle which correspond to specific measuring points. Use the reference points when checking the vehicle structure.

Dimension charts may use the center of a hole, bolt head, or nut, etc. as a reference point. A description and location chart will tell you how and where the measurements should be taken. The most accurate reference point is a gauge hole or a control hole used by the assembly plant in order to control tolerances when the vehicle was built. Refer to Frame Control Hole Description  for more information about control holes.

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