Chevrolet Sonic Repair Manual: Gears Cleaning and Inspection (Gen 1)

Chevrolet Sonic Repair Manual / Powertrain / Transmission/Transaxle / Manual / General / Gears Cleaning and Inspection (Gen 1)

Gears

Warning:

Wear safety glasses to avoid injury when using compressed air or any cleaning solvent. Bodily injury may occur if fumes are inhaled or if skin is exposed to chemicals.

Clean the following gears in a suitable solvent and air dry all the parts.

1st gear (1)
2nd gear assembly (4)
3rd gear assembly (3)
4th gear assembly (2)
Reverse idler gear (5)

Inspect the gear tooth surfaces on all the gears for the following conditions:

Cracks
Pitting
Nicks
Chipped gear teeth
High spots ?small shiny spots on the gear teeth mating surfaces

Input Shaft

Clean the input shaft (1) in a suitable solvent.
Clean and air dry the oil gallery.
Inspect the input shaft bearing surfaces for the following conditions:

Wear
Lack of lubricant
Debris embedded in the oil grooves
Brinelling

Inspect the input shaft splines for wear or damage.

Replace the input shaft if any of the above conditions are found.

Main Shaft

Clean the main shaft (1) in a suitable solvent.
Clean and air dry the oil gallery.
Inspect the main shaft bearing surfaces for the following conditions:

Wear
Lack of lubricant
Debris embedded in the oil grooves
Brinelling

Inspect the main shaft splines for wear or damage.

Replace the main shaft if any of the above conditions are found.

Reverse Idler Gear and Shaft

Clean the reverse idler gear (1) and shaft (2) in

Clean the reverse idler gear (1) and shaft (2) in a suitable solvent and air dry all the parts.
Inspect the reverse idler gear bushing (3) for the following conditions:

Excessive wear
Scoring
Pitting

Replace the reverse idler gear if the bushing is faulty.

Inspect the reverse idler gear shaft for the following conditions:

Excessive wear
Scoring
Pitting

Replace the reverse idler gear shaft if it is faulty.

Gear Position Sensor Replacement

Gear Position Sensor Replacement Callout Component Name Preliminary Procedure Unclip the engine control module (ECM) and bracke ...

Gears Cleaning and Inspection (Gen 2)

Gears Warning: Wear safety glasses to avoid injury when using compressed air or any cleaning solvent. Bodily injury may occur if fumes are inhaled or if skin is exp ...

Other materials:

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Turn the steering wheel left and right to clear the area around the front wheels. Turn off any traction system. Shift back and forth between R (Reverse) and a low forward gear, spinning the wheels as little as possible. To prevent transmission wear, wait until the wheels stop spinning before s ...

Adhesive Installation of Liftgate Windows
Warning: Refer to Glass and Sheet Metal Handling Warning. Use a urethane adhesive systems which meet GM Specification GM?€‰3651G. Remove all mounds or loose pieces of urethane adhesive from the pinchweld area. If the original window is being reused, remove all but approxi ...

Driver or Passenger Seat Cushion Frame Replacement
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