Chevrolet Sonic manuals

Chevrolet Sonic Repair Manual: Crankshaft Rear Oil Seal Replacement

Chevrolet Sonic Repair Manual / Powertrain / Engine / Engine Block / Seals and Gaskets / Crankshaft Rear Oil Seal Replacement

Special Tools

EN-658 Rear Main Seal Installer

For equivalent regional tools, refer to Special Tools.

Removal Procedure
  1. If equipped with automatic transmission, remove the flex plate. Refer to Automatic Transmission Flex Plate Replacement.
  2. If equipped with a manual transmission, remove the flywheel. Refer to Engine Flywheel Replacement.


  3. Note:

    Do not damage the outside diameter of the crankshaft or chamber with any tool.

  4. Using a flat-bladed tool, remove the rear crankshaft oil seal (1).
Installation Procedure

    Install the crankshaft rear oil seal (1) with EN-658 installer
  1. Install the crankshaft rear oil seal (1) with EN-658 installer (2).


  2. Using the EN-658 installer (2) , install a NEW crankshaft real oil seal (1).
  3. If equipped with a manual transmission, install the flywheel. Refer to Engine Flywheel Replacement.
  4. If equipped with automatic transmission, install the flex plate. Refer to Automatic Transmission Flex Plate Replacement.
Crankshaft Rear Oil Seal Installation
Special Tools EN-658-1 Installer EN-235-6 Installer For equivalent regional tools, refer to Special Tools. Slide the crankshaft rear oil seal (2) across the EN-235-6 installe ...

Exhaust2
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Other materials:

Connecting a USB Storage Device or iPod/iPhone
To connect a USB storage device, connect the device to the USB port. To connect an iPod/iPhone, connect one end of the device’s cable to the iPod/iPhone and the other end to the USB port. The iPod/iPhone charges while it is connected to the vehicle if the vehicle is in the ACC/ACCESSORY or O ...

Electrical System Overload
The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed. This greatly reduces the c ...

Engine Coolant Thermostat Housing Installation
Caution: Refer to Engine Coolant Thermostat Housing Caution. Clean sealing surface. Install a NEW engine coolant thermostat housing seal. Install the engine coolant thermostat housing (2). Caution: Refer to Fastener Caution. Note: Screw in the 4  ...

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