Inaccurate Shift Points. GMC Truck Envoy

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2001 🢒 Envoy - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E 🢒 Inaccurate Shift Points

Checks

Causes

Oil Pump Assembly (4)

•	Stuck pressure regulator valve

•	Sticking pump slide

Valve Body Assembly (60)

Spacer plate or gaskets misassembled, damaged or incorrect

Case (103)

•	Porous or damaged valve body pad

•	2-4 Servo Assembly

-	2-4 accumulator porosity

-	Damaged servo piston seals

-	Apply pin damaged or improper length

•	2-4 Band Assembly

Burned

-	Anchor pin not engaged

Throttle Position Sensor

•	Disconnected

•

Damage

Vehicle Speed Sensor (36)

•	Disconnected

•

Damaged

•	Bolt not tightened

4WD Low Switch

•	Disconnected

•

Damaged