Recent content by Treads

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    Maintaining my GM 4T65E in a Buick LaCrosse

    My 2007 Buick Lacrosse L26 has 138,000 miles and it has been 60,000 miles since last transmission service. I have had zero issues with the transmission; no leaks, good color, no burnt smell and always shifts good. Should I just do a filter and fluid change and nothing else?
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    Change Coolant

    I replaced the elbows when I replaced the water pump
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    Change Coolant

    Closer to 2 years
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    Change Coolant

    Yes. I have 2 so I can alternate while I clean them.
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    Change Coolant

    I purchased my '07 3.8 series in 06/2022. I had 36k on it. That winter, I had heater problems, I fixed it by back flushing the heater core. The next summer, I decided to do a cooling system flush, figuring it had never been done. I used Prestone cleaner, distilled water and Prestone Dexcool...
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