700R4 Transmission Valve Body - Transmission Repair - Transgo Kit Install

This video shows a THM-700-R4 transmission that often fails to upshift into 4th gear after use. The presenter uses a Transgo valve body kit, which is a common choice for this unit. Various valve body kits are available, all of which work well. The kit is not a high‑performance upgrade; it addresses factory flaws and normal wear on the bores and springs. Transmission repair is a fast‑paced job, and using these kits helps eliminate guesswork, saving time and allowing the mechanic to move on to the next vehicle quickly.