Please enable JavaScript to view this page.

Automatic Electronic Transmission Service

AGM 218W

Automatic Electronic Transmission Service

AGM 218W

Course Description

Prerequisite: AGM 143. Introduces the operation, maintenance, and service of GM electronically controlled transmissions. Credit may be earned in AGM 218W or SKGM 218W or ACD 218W or AGM 232, but not in more than one. (80-100)

Outcomes and Objectives

Diagnose general transmission and transaxle. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Identify and interpret transmission/transaxle concern; assure proper engine operation; determine necessary action. P-1
  • Research applicable vehicle and service information, such as transmission/transaxle system operation, vehicle service history, service precautions, and technical service bulletins. P-1
  • Locate and interpret vehicle and major component identification numbers (VIN, vehicle certification labels, and calibration decals). P-1
  • Diagnose fluid usage, level, and condition concerns; determine necessary action. P-1
  • Perform pressure tests; determine necessary action. P-1
  • Perform stall test; determine necessary action. P-2
  • Perform lock-up converter system tests; determine necessary action. P-1
  • Diagnose electronic, mechanical, hydraulic, vacuum control system concerns; determine necessary action. P-1
  • Diagnose noise and vibration concerns; determine necessary action. P-2
  • Diagnose transmission/transaxle gear reduction/multiplication concerns using driving, driven, and held member (power flow) principles. P-1

Adjust and perform maintenance on transmission and transaxle. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Inspect, adjust or replace throttle valve (TV) linkages or cables; manual shift linkages or cables; transmission range sensor; check gear select indicator (as applicable). P-1

Repair in-vehicle transmission and transaxle. Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Inspect and replace external seals and gaskets. P-2
  • Inspect extension housing, bushings and seals; perform necessary action. P-3
  • Inspect, leak test, flush, and replace cooler, lines, and fittings. P-2
  • Diagnose electronic transmission control systems using a scan tool; determine necessary action. P-1

Repair of off-vehicle transmission and transaxle (removal, disassembly, and reinstallation). Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Remove and reinstall transmission and torque converter (rear-wheel drive). P-2
  • Remove and reinstall transaxle and torque converter assembly. P-1
  • Disassemble, clean, and inspect transmission/transaxle. P-1
  • Inspect, measure, clean, and replace valve body (includes surfaces and bores, springs, valves, sleeves, retainers, brackets, check-balls, screens, spacers, and gaskets). P-2
  • Inspect servo bore, piston, seals, pin, spring, and retainers; determine necessary action. P-3
  • Inspect accumulator bore, piston, seals, spring, and retainer; determine necessary action. P-3
  • Assemble transmission/transaxle. P-1

Repair of off-vehicle transmission and transaxle (oil pump and converter). Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Inspect converter flex plate, attaching parts, pilot, pump drive, and seal areas. P-2
  • Measure torque converter endplay and check for interference; check stator clutch. P-2
  • Inspect, measure, and reseal oil pump assembly and components. P-1

Repair of off-vehicle transmission and transaxle (gear train, shafts, bushings and case). Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Measure endplay or preload; determine necessary action. P-1
  • Inspect, measure, and replace thrust washers and bearings. P-2
  • Inspect oil delivery seal rings, ring grooves, and sealing surface areas. P-2
  • Inspect bushings; determine necessary action. P-2
  • Inspect and measure planetary gear assembly (includes sun, ring gear, thrust washers, planetary gears, and carrier assembly); determine necessary action. P-2
  • Inspect case bores, passages, bushings, vents, and mating surfaces; determine necessary action. P-2
  • Inspect transaxle drive, link chains, sprockets, gears, bearings, and bushings; perform necessary action. P-2
  • Inspect, measure, repair, adjust or replace transaxle final drive components. P-2
  • Inspect and reinstall parking pawl, shaft, spring, and retainer; determine necessary action. P-3

Repair of off-vehicle transmission and transaxle (friction and reaction units). Complete 95% of Priority 1, 80% of Priority 2, and 50% of Priority 3 NATEF tasks as listed below.

Objectives:

  • Inspect clutch drum, piston, check-balls, springs, retainers, seals, and friction and pressure plates; determine necessary action. P-2
  • Measure clutch pack clearance; determine necessary action. P-1
  • Air test operation of clutch and servo assemblies. P-1
  • Inspect roller and sprag clutch, races, rollers, sprags, springs, cages, and retainers; replace as needed. P-1
  • Inspect bands and drums; determine necessary action. P-2

Write effectively.

Objectives:

  • Practice writing essay unit tests, quizzes.
  • Practice writing service repair orders (concern, cause, correction).
  • Practice writing daily assignments.
  • Practice writing weekly feedback to instructor.