No Fourth, Fifth, and Sixth Gear. Chevrolet Chevy Suburban

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2008 🢒 Chevy Suburban - 2WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 No Fourth, Fifth, and Sixth Gear

Checks

Causes

4-5-6 (with Turbine Shaft) Clutch Assembly (56)

•	Inspect for damaged or worn clutch plates (433-435).

•	Inspect for damaged piston (439), piston dam (437), dam retaining ring (436), and clutch spring (438).

•	Inspect for improper selective 4-5-6 clutch backing plate retaining ring (431).

•	Inspect for cut, worn, or damaged turbine shaft fluid seal rings (442).

•	Inspect for damaged or distorted turbine shaft.

Control Valve Upper Body Assembly (304)

Inspect the 1/Reverse band and 4-5-6 clutch regulator valve (327) and spring (326) for wear or damage.

4-5-6 Clutch (with Output Carrier Shaft and Dampener) Hub Assembly (58)

Inspect the hub assembly (475), dampener (476), and apply plate (477) for wear or damage.

Output Carrier Assembly (68)

Inspect for damaged or stripped internal splines on the output carrier assembly.