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To fix a 2006 Chevy van with a 4L80-E transmission that only has forward gears, first check the Transmission Fluid level and condition, as low or dirty fluid can impact shifting. If the fluid is fine, inspect for any potential issues with the valve body, as a malfunction here can prevent proper gear engagement. Additionally, check for any fault codes using an OBD-II scanner, and consider examining the transmission solenoids for proper operation. If these steps do not resolve the issue, a more in-depth inspection or rebuild of the transmission may be necessary.

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AnswerBot

2mo ago

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