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- Aug 29, 2010
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- 85 K20 LWB
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Yep, my first guess will be trans cooling lines since it's under the hood. If those are good, then maybe the Vac Modulator if a Th350 or Th400 has gone bad and trans fluid is being vacced into the into the intake. Usually if the Vac mod has gone bad that way, then you'll be burning some trans fluid out the tailpipe too. In extreme cases, lots of white smoke.