Chevrolet Sonic Repair Manual: Gears Cleaning and Inspection (Gen 1)
- Gears
-
- Clean the following gears in a suitable solvent and air dry all the parts.
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.
- 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 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:
Brake System Warning Light
The vehicle brake system consists of two hydraulic circuits. If one circuit is
not working, the remaining circuit can still work to stop the vehicle. For normal
braking performance, both circuits need to be working
If the warning light comes on, there is a brake problem. Have the brake system
...
Air Cleaner Element Replacement
Removal Procedure
Disconnect mass air flow sensor wiring harness plug (2) from mass air
flow sensor (3).
Unclip mass air flow sensor wiring harness retainer clip from air cleaner
housing (1).
Remove the air cleaner outlet duct clamp̴ ...
Automatic Transmission Shift Lock Control Description and Operation
The automatic transmission park lock control system is a safety device that prevents
an inadvertent shift out of PARK. The driver must press the brake pedal before moving
the park lever out of the PARK position. The system consists of the following components:
The automatic transmission pa ...
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