Caring For AGM And Flooded Batteries
Ethanol Damage to Fuel Pumps
Forcing Vehicle Monitors For Calibration
Caring For AGM And Flooded Batteries
Ethanol Damage to Fuel Pumps
Forcing Vehicle Monitors For Calibration
Domestic Driveability Diagnostics & Tips
Sponsored By NGK Spark Plugs
Learn how to streamline the diagnostic process for driveability issues. This webinar will help you effectively communicate a vehicle diagnosis to the service advisor. The presentation will provide "real-world" data and cases studies.
This technical topic is geared for the average B+ technician and/or a refresher for the A technician. NGK is dedicated to meeting the learning needs of all skill levels.
Speakers Philip Austin, Technical Training Specialist, NGK Spark Plugs Andrew Markel, Director of Technical Content, ShopOwner
Sponsored By NGK Spark Plugs
The new issue of ShopOwner magazine is now available to read online or download at no charge to you!
TPMS sensor signals are low power and low frequency, with most sensors transmitting at 315MHz or 433MHz.
One of the problems with ethanol is how it reacts to water in the air and in the tank.
Underhood Service targets repair shops that derive 50 percent or more of their revenue from the service and repair of under-the-hood systems. The expanding amount of knowledge and capital needed to keep up with technological advances has led these shop owners to concentrate on underhood systems, while also offering preventive maintenance services on most major vehicle systems. By subscribing, you’ll receive the ShopOwner digital edition magazine (12 times/year) featuring articles from Underhood Service and the Underhood Service eNewsletter (twice weekly). Access to digital editions, contests, news, and more are ready for you today!
Underhood Service targets repair shops that derive 50 percent or more of their revenue from the service and repair of under-the-hood systems. The expanding amount of knowledge and capital needed to keep up with technological advances has led these shop owners to concentrate on underhood systems, while also offering preventive maintenance services on most major vehicle systems. By subscribing, you’ll receive the ShopOwner digital edition magazine (12 times/year) featuring articles from Underhood Service and the Underhood Service eNewsletter (twice weekly). Access to digital editions, contests, news, and more are ready for you today!
ByUnderhood Service Staff Writers on Aug 19, 2021
ByUnderhood Service Staff Writers on Jul 15, 2022
ByUnderhood Service Staff Writers on Jul 6, 2022
High underhood temps, increased power demands and vibration can damage alternators or starters. Sponsored by ACDelco.
Don’t settle for “almost” - it matters where the engine is manufactured or remanufactured. Sponsored by ACDelco.
Brake pads are thoroughly developed to produce the best result. This video is sponsored by ZF Aftermarket.
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Jon Nelson discusses the GM Personalized Automobile Security System. This video is sponsored by CARDONE.
CC: You are at the end of a repair on a GM vehicle, you might have replaced the engine or body control module, and now the engine will not start, or it runs for a few seconds and stops due to a lack of fuel.
What is the problem? The GM Personalized Automobile Security System.
On this Pontiac G6, we just replaced the Engine Control Module due to a short to ground problem in the wiring harness. The unit is located under the hood next to the battery. Replacement is easy. The replacement ECM came pre-programmed.
Will it start? No. Is the problem with the PCM we installed? No. The issue is right here in my hands, the car doesn’t know the keys.
On just every GM model made since 1995, GM incorporated anti-theft features designed to prevent thieves from stealing a vehicle by removing the lock cylinder with a slide hammer and attempting to start the vehicle with a screwdriver, just like in the movies. The system is based on a key that can be identified by the lock cylinder. If the key matches the vehicle, the engine can be started.
GM has made changes to the system over the years. The first systems used a key with a resistor chip. The next development was a magnet in the key that worked with a hall effect sensor in the lock cylinder. The next generation used a transponder chip in the key.
In all the systems, the lock cylinder or ring antenna communicates with a dedicated anti-theft module, body control or theft deterrent module. GM calls these systems VAT, Passlock, Passkey, Passkey II and Passkey III.
You can identify the different systems by the keys.
-This is a VATs key, with a resistor in the body of the key.
-This is a key for the Passkey and Passkey 2 system. Just like the VATs key, there is a resistor in the key’s blade. These keys can be found in both the single key and dual-key arrangements
This is a Passlock key. It does not have a resistor. Instead, it has a magnet inside that signals a stationary hall effect sensor a coded lock cylinder. -PassKey 3 systems have a chip in the key. The easiest way to identify these keys is the stamped letters PK3 at the base of the key.
When a new ECM, BCM or Theft Control Module is installed, the key codes are lost. The modules must relearn the keys for the vehicle so it will start.
The key words to search for in your service information database are, Passlock, Passkey or VTD.
The Passkey III system on this G6 does not require a scan tool to relearn the keys, just a little time, patience and maybe a stopwatch. Let’s get started…
This video is sponsored by CARDONE.
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Technical resources to help diagnose and repair engine-related service issues.