I have a 2005 Buick Rendezvous. Traveling between 45-55mph and going up a slight hill the transmission will not downshift but it will make the engine stutter. If I tap the brake, the transmission will downshift. How do I fix this?

  • Have you checked the fluid level? – Solar Mike Sep 30 '18 at 17:44
  • Fluid level is fine. I actually replaced the fluid. – Ray Meixner Oct 3 '18 at 1:45

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