Dealing With a GM DTC C0327 Transfer Case Code

If your truck's dash suddenly lights up with a "Service 4WD" message, there's a good chance you're looking at a gm dtc c0327 stored in the computer. It's one of those annoying codes that usually pops up at the worst possible time—like right before a snowstorm or when you're heading out to the trails. This specific code points toward a malfunction in the transfer case encoder motor circuit, and while it sounds complicated, it's actually a pretty common headache for GM owners. ...

February 9, 2026 · 6 min · Loree Clara