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2001 GMC Sonoma, Transmission Photo
Posted to the Waveform Library on 12/7/2007

Transfer case vacuum switch. The one on the right is stuck and was causing the front axle to partially apply. This caused a loud whirring or siren like noise. from the front axle.

 

car Vehicle Data

2001 GMC Sonoma SL 4.3L

VIN 1GKDT13W31
Engine4.3 L / 6 cyl / GAS
Trans4-speed AutomaticTransmission (Electronic)
DeliveryFuel Injection
SubsystemTransmission
ConditionKnown Bad

car Vehicle Data

2001 GMC Sonoma SL 4.3L

VIN 1GKDT13W31
Engine4.3 L / 6 cyl / GAS
Trans4-speed AutomaticTransmission (Electronic)
DeliveryFuel Injection
SubsystemTransmission
ConditionKnown Bad