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dely0575

95 Cutlass 3.1 Tranny not going to OD

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:dunno::dunno: I just got my Cutlass last month & it has a few issues. Hope I can solve them here. My tranny don't shift into OD anymore. It did, for about 3 weeks it did fine. I did a complete tune up today. When i'm driving in OD it stays in 3rd. when I let off the gas it just acts like it's in neutral, There is a whining noise, Sounds like it could be coming from the TC. Any help will be Greatly Appreciated!

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You need to get an ALDL cable and tuner pro to check the codes. You may have a bad pwm or tcc solenoid. My trans did that (actually if it was cold it went into 4th but then kicked it out). Turns out the valve inside the trans was sticking. I swapped it out and that issue went away

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