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2003 CTS Luxury Sport
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20 Posts
Discussion Starter #1
Does anyone know why when I use my windshield wipers I feel a thump on the gas pedal everytime the wipers go across the windshield? Everytime the windshield wipers go to wipe it thumps on the gas pedal in synch with the wipers....
 

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'05 CTS 3.6L
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102 Posts
Is the '03 drive-by-wire? My '05 is and I get random pulsations on the gas pedal from time to time. Not necessarily when wipers are on either. It sounds like maybe the transducer is getting some sort of feedback from noise in the harness or something ...
 

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CTS 03
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1,765 Posts
The 03 is drive by wire. As Eldodave said, maybe the wiper motor is loose which is putting the thump on the firewall. What you feel in your foot is the thump on the firewall, but not necessarily the accelerator mechanics.
 
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