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transmission slipping

  1. Envoy Tranny Won't shift

    Transmission Mods
    Hello all, first time poster, but have learned and saved a lot due to the great people here. I was driving my 04 Envoy SLE, 4.2 L 6-cylinder, and I noticed that I was only going about 45 yet the RPM's were at around 5-6. Made it home , checked the fluid and it was empty. Filled it , tried...
  2. Transmission slipping and losing gears

    4x4 Drivetrain
    Recently my 2003 Trailblazer (4.2 V6) transmission lost power while driving on the freeway. I decided to do a full tune up on the vehicle in hopes that it would fix the problem. I changed the transmission fluid and filter and replaced the spark plugs. For two days, my car was running like a...