Please enable JavaScript to view this page.

Automatic Transmission Level 2

ASEP 152

Automatic Transmission Level 2

ASEP 152

Course Description

Prerequisites: Prerequisites: ASEP 102 and ASEP 149.

Practices the service and repair of many automatic transmissions. Practices NATEF tasks to AST (Automotive Service Technology) level related to automatic transmissions. Requires meeting all related GM ASEP training requirements.(15-15)

Outcomes and Objectives

Complete general Automotive Transmission and Transaxle Level 2 NATEF tasks as listed below.

Objectives:

  • Identify and interpret transmission/transaxle concern, differentiate between engine performance and transmission/transaxle concerns; determine necessary action.
  • Research applicable vehicle and service information fluid type, vehicle service history, service precautions, and technical service bulletins.
  • Diagnose fluid loss and condition concerns; determine necessary action.
  • Check fluid level in a transmission or a transaxle equipped with a dip-stick.
  • Check fluid level in a transmission or a transaxle not equipped with a dip-stick.
  • Perform stall test; determine necessary action.
  • Perform lock-up converter system tests; determine necessary action.
  • Diagnose transmission/transaxle gear reduction/multiplication concerns using driving, driven, and held member (power flow) principles.
  • Diagnose pressure concerns in a transmission using hydraulic principles (Pascal’s Law).

Complete In-Vehicle Transmission/Transaxle Level 2 NATEF tasks as listed below.

Objectives:

  • Inspect, adjust, and replace external manual valve shift linkage, transmission range sensor/switch, and park/neutral position switch.
  • Inspect for leakage; replace external seals, gaskets, and bushings.
  • Inspect, test, adjust, repair, or replace electrical/electronic components and circuits including computers, solenoids, sensors, relays, terminals, connectors, switches, and harnesses.
  • Drain and replace fluid and filter(s).
  • Inspect powertrain mounts.

Complete Off-Vehicle Transmission and Transaxle Level 2 NATEF tasks as listed below.

Objectives:

  • Remove and reinstall transmission/transaxle and torque converter; inspect engine core plugs, rear crankshaft seal, dowel pins, dowel pin holes, and mating surfaces.
  • Inspect, leak test, and flush or replace transmission/transaxle oil cooler, lines, and fittings.
  • Inspect converter flex (drive) plate, converter attaching bolts, converter pilot, converter pump drive surfaces, converter end play, and crankshaft pilot bore.
  • Describe the operational characteristics of a continuously variable transmission (CVT).
  • Describe the operational characteristics of a hybrid vehicle drive train.