Autoblog may receive a share from purchases made via links on this page. Pricing and availability are subject to change. Changing your own automatic transmission fluid should be done every 20,000 to ...

Question:I have a2008 Chevy TrailblazerSS RWD with the 6.0-liter V-8 and 4L70E automatic, with 42,200 miles. The owner's manual says the transmission fluid and filter need to be replaced at 50,000 ...

While many car-makers now profess that their automatic transmission no longer need regular fluid changes, many mechanics believe there’s no harm in doing so and, in fact, there are benefits in doing ...