Answer
Aug 28, 2025 - 03:54 PM
The GMT400, which refers to a series of Chevrolet and GMC trucks and SUVs from the late 1980s to the late 1990s, typically uses brake lines with a fitting size of 3/16-inch. The fittings are often double-flared with a standard thread size, usually 3/8-inch-24. However, it's always best to check your specific vehicle model and year for the most accurate information.
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