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Chevrolet Sonic Repair Manual: How to Identify Plastic Parts

Chevrolet Sonic Repair Manual / Body / General / How to Identify Plastic Parts


Plastic parts can be identified by the SAE code, which is usually found on thesaepvcsae

Plastic parts can be identified by the SAE code, which is usually found on the rear of the part, and/or by the characteristics of the plastic. Knowing the type of plastic aids in selecting the proper repair materials and in selecting the proper repair procedure.

Look for the SAE code stamped into the part.

Code Found

Match the code to those in the plastic identification chart to determine whether the plastic is thermoplastic or thermoset plastic, and whether the plastic is rigid or flexible. Refer to Plastic Identification and Refinishing Systems.

No Code Found

Warning:

Do NOT use a plastic burn test to distinguish the type of plastic. The burn test produces vapors which are harmful.

Perform one or both of the following tests to determine if the part is thermoplastic polyolefin or thermoset non-polyolefin.

Float Test
  1. Cut a shaving of plastic from the back of the part.

    The shaving should be free of mold release agents and paint.

  2. Place the shaving in a container of water.
  • Thermoplastic polyolefin floats.
  • Thermoset non-polyolefin sinks.
Abrasion Test
  • Sand a spot near the damaged area with Grade?€‰36 Roloc Disc.
  • Thermoplastic polyolefin material melts or frays when sanded.
  • Thermoset non-polyolefin material sands cleanly.

Thermoplastic and thermoset plastics can be either rigid or flexible. Thermoplastic plastic parts are best repaired with a hot iron plastic material-feed welder, but are usually replaced. Thermoset plastic can be repaired with epoxy or other more rigid 2 package repair material.

For general repair instructions, refer to General Plastic Repair.

General Plastic Repair
Warning: In order to reduce the risk of personal injury when exposed to toxic fumes while grinding, cutting, or applying repair material on any type of sheet molded compound or RIM rigid plas ...

Plastic Collar Quick Connect Fitting Service
Removal Procedure Warning: Refer to Gasoline/Gasoline Vapors Warning. Note: There are several types of plastic collar fuel and evaporative emission quick conne ...

Other materials:

Radio
Radio Controls without Touchscreen : Press to turn the system on or off. Turn to increase or decrease the volume. When the system is on, press and release to mute the system. Press and release again to turn the sound back on. RADIO/BAND: Press to choose FM, AM, or SiriusXM® (if equipped). ...

Water Pump Replacement (LUW)
Removal Procedure Drain the cooling system. Refer to Cooling System Draining and Filling. Remove the water pump pulley. Refer to Water Pump Pulley Replacement. Remove the 5 water pump bolts (2). Remove the water pump (1). Insta ...

Evaporative Emission Canister Replacement (Steel Tank)
Removal Procedure Remove the evaporative emission canister bracket fasteners (1). Disconnect the purge solenoid valve electrical connector (1). Disconnect the evaporative emission canister vent hose (2). Disconnect the evaporative emission c ...

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