This vehicle has systems that operate on a radio frequency that comply with Part 15 of the Federal Communications Commission (FCC) Rules and with RSS-210/211 of Industry Canada.
Operation is subject to the following two conditions: 1. The device may not cause interference.
2. The device must accept any interference received, including interference that may cause undesired operation of the device.
Changes or modifications to any of these systems by other than an authorized service facility could void authorization to use this equipment.
Radio Frequency
Identification (RFID)Chevrolet Cobalt Service & Repair Manual. Engine Valve Seat Grind
It is usually recommended to send
head to machine shop for valve seat grinding.
A suitable valve grinding tool
kit is required to grind valve seats.
Valve guides must be in good condition
before grinding because a pilot is used in guide to center stones. ...