Where is the vacu module line at My truck will not shift after 2nd gear on highway but shifts just fine in town I need help asap I have to travel to getmy children

Rebecca Samilton

Asked by Aug 02, 2014 at 11:16 PM about the 1994 Chevrolet C/K 2500 Silverado Standard Cab LB

Question type: Maintenance & Repair

3 Answers


It's on the side of the transmission. It's round and has the vacuum line attached.


When you are driving on the highway, if you back off the gas pedal the transmission just might shift into the next gear. I hope that works so you can get the kids

Andrew Olsen

you have a 4l60e, its electronic. No vacuum modulator valve. Will it not shift or does it act like neutral? The most common failure of the 4l60e/700r4 is slipping in 3rd and 4th gear

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