GMC CROSS COUNTRY

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Exterior Noise Test

Accelerating from Standstill

Date : 2008-01-08
Personnel : B.S., T.s. & S.C.
Temperature (°F) : 64 Humidity (%) : 52
Wind Speed (mph) : 8 Wind Direction : SSW
Barometric Pressure (in.Hg) : 30.06
Verify that microphone height is 4 feet, wind speed is less than 12 mpg and ambient temperature is between 30 F and 90 F: true checked by S.C.
Initial Sound Level Meter Calibration: true checked by S.C.
Exterior Ambient Noise Level dB(A): 42.8

Accelerating from Constant Speed
Curb (Right) Side
Accelerating from Constant Speed
Street (Left) Side
Run # Measured Noise Level dB(A) Run # Measured Noise Level dB(A)
1 74.5 1 74.9
2 75.3 2 74.4
3 74.9 3 74.6
4 75.1 4 74.6
5 74.9 5 74.5
Average of two highest actual noise levels = 75.2 dB(A) Average of two highest actual noise levels = 74.8 dB(A)