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  1. #1

    Default 93 Suburban 2500 won't shift into 3rd...

    The transmission has been operating normally - no slipping, no noises, shifting is smooth. From out of nowhere, it decided not to shift into 3rd. Immediately prior to this, my hubby had installed a new cigarette lighter using the existing wires. When he installed it, he blew the fuse to that circuit a couple times. After getting it installed & it was working normally (the cigarette lighter), the trans immediately quit shifting into 3rd... We've checked all fuses in the fuse box, and nothing is blown. We're just wondering if this could be something simple that he could track down, before we resort to taking it into the shop.

    One unusual thing it did do a couple times was when I put it in park, it acted like it was in neutral. I moved the shifter to drive, then back to park & it would be right.

    ---------- Post added at 06:15 PM ---------- Previous post was at 06:14 PM ----------

    Just wanted to add that this trans was rebuilt approximately 22,000 miles ago (not by us - the previous owner who was a mechanic).

  2. #2


    We know the guy who we bought it from - he has a shop & this was his personal vehicle before we got it. He had rebuilt both the engine & the trans before he sold it to us. Engine has approx. 16,000 miles on it since the rebuild, and the trans. approx. 22,000. The truck has approx. 260,000. Anyway, whether he lied or not, it's not working now! :( So, we're going to take it to our local shop - they've done a lot of work for us, and they don't do more than necessary. Hopefully they can figure it out easily, & it won't cost us an arm & leg! Thanks.

  3. #3


    UNBELIEVABLE!!!! We took it to our local shop, and it turns out that it was just a wire that was shorting out. Sheesh! It was VERY inexpensive to fix, thank the Lord!

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