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Northstar vacuum leak
I have this 02 Caddy Northstar that has a vacuum leak that appears to be at the rubber duct between the plenum and the throttle body. Is this a common leak source on this engine? What about plenum failures? Login to read more. 
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| Engine | 4.6 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2002 Cadillac DeVille 4.6L
| Engine | 4.6 L |
| Trans | 4-speed Automatic (Electronic) |
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