I have pressure building in the 4l80E tranny in my 97 Silverado 2500 SO IT SHUTS OUT OF MY TRANNY FILLER TUBE WITH ALOT OF PRESSURE..cannot find the problem.any ideas?

Asked by Sep 28, 2015 at 02:16 AM about the 1999 Chevrolet Silverado 2500 2 Dr LS 4WD Standard Cab LB HD

Question type: Maintenance & Repair

2 Answers

83,355

That is not pressure it is overheated fluid, check the cooler lines for damage, if none found then the tranny cooler in the radiator, or just bypass the radiator all together with an auxiliary trans cooler, just make sure you get one that is big enough.

Best Answer
35,275

Make sure the transmission is not overfilled. Check the vent tube located at the top of the transmission, it may be clogged.

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