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fluid out the vent
have a 4l60 blowing fluid out the vent hose when it reaches 50 mph. fine at 45mph. trans shift good and temp is 167 degrees. Has a code 1870, has anyone ever seen this code cause a fluid leak at the vent hose. If I slow down to 45 it stops. (smoke out the back... Login to read more. 
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| Engine | 4.2 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2003 Chevrolet Trailblazer LT 4.2L
| Engine | 4.2 L |
| Trans | 4-speed Automatic (Electronic) |
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