How do you verify the accuracy of vehicle gauges after maintenance?

• A. Compare gauge readings with known references (GPS speed, measured fuel, calibrated temperature), and replace sending units or instrument cluster if inaccurate.
• B. Rely only on visual appearance of gauge faces and assume accuracy.
• C. Swap gauge clusters between vehicles until readings look correct.
• D. Reset the instrument cluster using the vehicle's owner's manual.

Answer: (A)