GMLAN SYSTEM & OnStar

  The broad application of the system GMLAN new models of Chevrolet, laying the groundwork for the launch of a new technological era, completely changed the traditional traditional philosophy to date electronic systems. The variety of new electronic systems, is applied to the high demands that are using using integrated software, communications and data transfer.

Basically it is an advanced system possible - Bus which is indicated for use in  vehicles fitted fitted with high-tech systems (ESP, AWD, TCM, etc.).

The current exchange of information between electronic control units are made different by using separate cables. The disadvantage in this case back to the fact that due to the the increased amount of information needed to be, increasing the number of wires, thus increasing the electrical potential damage.The highly innovative features of the system to transfer data GMLAN day. The data can be simulated with a wagon. In the same way that a car carrying a large number of people in in these destinations, so the data transfer is handled a large number of units of information between different electronic control (exchange data). The data exchange between between electronic control unit allows the unit acts as a single operating system. The more information get an electronic control system, the more fully implement the functionality of its its own independence.

The advantages of using the data transmission system - the data bus is:At the sensor and signal cables from the use of signals from sensors.Less cabling across the entire wiring system.A significant reduction in weight of the wiring from avoiding the large number of cables.Less power connections - connections at both ends of the electronic control unit.Improved reliability and episkefasimotita.The ability to use the new function facilities.The network GMLAN (GM Local Area Network) is a type of data can be - used bus and passed only by GM, Chevrolet model applies.Evolutionary history of the system can - Bus. About Bosch collaboration with Intel, to develop protocols can - Buses in 1987 specifically for the needs of the automotive industry. The original CAN - Control Area Network, please refer to the electronic control units are interconnected to exchange data. The protocol can be - is recognized worldwide in the automotive bus, a standard system of data exchange, while being used in industrial automation. This is mainly due to the structure of the network settings and software data protocols are used. It also provides high reliability for engineering costs are relatively low.       This system ensures the exchange of data on the car, and have replaced other systems such as pulse width modulation - PWM, analog current, trend lines, etc.Regional data GMLAN. The unique elements associated with GMLAN system is the electronic control unit. Other components such as actuators, sensors, lights, electric motors are connected to the electronic control unit using regular cable. GMLAN system used by Chevrolet, is a serial transmission systems and data exchange.This exchange can take place through - in the form of bus voltage pulse with a specified range and latitude. The electronic control unit that functions as receiver, which actually means that it can emit or receive information.Their activities can be identified with a conversation over the phone. In conversation, people use communications voice.         In the communication system can - bus, electronic control units using the corresponding voltage signal. The electronic control module shows information of the network and other entities to - listen. Some may use the information, while others will be ignored.The "auditors" and can "broadcast" may, be placed inside each electronic control unit. The Bus line, which can bring both ends of the resistor terminals. The resistor is to prevent data back after reaching the destination. This way to prevent possible interference with other data circulating on the Internet. The terminal resistor can be found embedded in the electronic control unit or the wiring inside as separate components.

GENERAL INFORMATION:GMLAN is a set of high level protocols for diagnosing ECU systems on supported vehicles. There are more than 20 different commands for reading,writing, and clearing information inside an ECU. GMLAN is a combination of GM2190 and Keyword 2000 diagnostics. All functions are defined in GMW 3110. GMLAN uses functions from ISO15765-2 (USDT Messaging) and supports OBD CAN, legislated by J1979 Requirement.

GMLAN has been extended with additional requirements and is often referred to as GM Global A. Global A includes many types of networks and protocols. Intrepid offers the most complete functionality for GM Global A.GMLAN FEATURES IN VEHICLE SPY .All the GMLAN features in Vehicle Spy are too numerous to list; however, here are a few to consider:

GMLAN Snapshot :The GMLAN Snapshot reduces all common diagnostics into one or two click operations. GMLAN Snapshot will query all ECUs on an entire vehicle and report all DTCs, DIDs, and other information in a quick list.Innovative Diagnostics Support
Intrepid's diagnostic solution exceeds other solutions by organizing diagnostics into Jobs. These Jobs can be saved and scripted. The data from these Jobs can be logged, plotted or used for trigger expressions. Unlike other tools, the GM engineer never needs to go offline for setup.GMLAN Virtual Networks View :The GMLAN protocol has a network management system called virtual networks. This concept is difficult to master and debug. Intrepid provides a virtual network view to visualize this complex aspect of GMLAN.GMLAN Simulator :The GMLAN Simulator simulates any combination of ECUs on the bus. The user can specify the signal data for each message. This data can include waveforms or data calculated from other signals or data values. Also, the simulator is fully scriptable.DPS Tools Flash Programming : Intrepid has developed full support for ECU programming using GM's DPS tools programming. GM engineers can select neoVI as an option and program on high or low speed CAN. Often Intrepid's hardware is faster – sometimes up to 50% when compared to other hardware tools.

More than 16 years ago, GM had the foresight and fortitude to create an industry-defining company, OnStar, focused on developing powerfully simple technology to make a real difference in peoples’ lives.

OnStar is the benchmark for in-vehicle safety, security, communication and convenience services, with more than 16 years of experience and more than six million current subscribers.

• OnStar has applied the lessons from more than 400 million cumulative subscriber interactions to continually evolve and improve its services. OnStar’s key services include: Automatic Crash Response, Stolen Vehicle Assistance, Turn-by-Turn Navigation, OnStar Vehicle Diagnostics and Hands-Free Calling.
• OnStar interacts with a subscriber an average of once every two seconds.

In responding to over 200,000 crash scenes, OnStar has had a fundamental impact on trauma response and crash outcomes.

• OnStar’s 16 years of experience has continued to define the state-of-the-art in crash response technology.
• Crash signature data allows for deep analytical evaluations across a broad and comprehensive range of vehicle crashes.
• OnStar is working with the Dr. Stewart Wang and the University of Michigan Health System to study exactly what happens in vehicle crashes, so that information can be used to better treat victims
  • The revolutionary research, conducted over approximately 18 months, will look at 1,000 incidents and ultimately will allow OnStar to predict not only the severity of a crash, but assist emergency care providers by providing the probability of certain types of injuries sustained by crash victims. 
  • Through support from OnStar, Michigan State Police, Michigan Department of Public Health and Trauma Centers throughout the State of Michigan, Dr. Wang and his team will be able to link OnStar telematics data with police, EMS and hospital records to confirm the effectiveness of OnStar’s Injury Severity Prediction (ISP).
  • The Centers for Disease Control (CDC), which strongly supports Dr. Wang’s work and OnStar’s ISP, predicts that because of this research, mortality rates for severely injured car crash victims will greatly improve when they are sent to a Level 1 Trauma hospital.
  
  

An important factor that separates OnStar from its competitors is the human connection of OnStar advisors, 24 hours a day, 7 days a week.

• When “life happens on the road”, these trained advisors offer much more than any automated system can offer: immediate, knowledgeable and personalized attention.
• OnStar advisors stay on the phone during an emergency and will give all crash details to emergency responders, including precise vehicle location, which can make the difference in receiving life-saving treatment.
• OnStar Emergency Advisors are now EMD certified, allowing them to offer life saving guidance and instructions while victims wait for first responders to arrive on scene.
• OnStar Emergency Advisors have to go through a comprehensive training process. This process includes, over 15 weeks of internal OnStar training, as well as specialized training by the National Academies of Emergency Dispatch (NAED), which includes Medical Priority Dispatch Systems (MPDS) protocol, CPR, emergency software instruction and OnStar-specific emergency processes. These Advisors also receive continued education on a variety of emergency topics in order to maintain their certification.

OnStar Stolen Vehicle Slowdown and Remote Ignition Block are powerful and highly valued next steps that will assist in the recovery of Stolen Vehicles.

• Remote Ignition Block allows an OnStar Advisor to send a signal that blocks the ignition, so once a stolen vehicle is turned off, it cannot be started again (until its recovered and the Advisor reactivates the ignition).
• Using Stolen Vehicle Slowdown, an Advisor sends a signal to a mobile stolen vehicle that deactivates the accelerator and gradually slows the vehicle to an idle speed, once a police officer indicates conditions are safe.
• Stolen Vehicle Slowdown is an enhancement to OnStar’s Stolen Vehicle Location Assistance, which our subscribers use approximately 400-500 times each month.
• This service can positively impact potentially life-threatening situations. According to National Highway Traffic Safety Administration statistics, about 30,000 police chases occur yearly and approximately 300 deaths occur as a result of these police chases.
• With capabilities such as Stolen Vehicle Slowdown and Remote Ignition Block, subscribers have the added peace of mind knowing that their vehicle can be prevented from being used as an instrument of harm.

OnStar’s Turn-by-Turn System allows GM to achieve true “Connected Navigation”.

• GM and OnStar’s innovative navigation offerings continue to provide practical and convenient solutions that enhance the driving experience.
• OnStar customers simply push the blue OnStar button and request an address or Point of Interest from an Advisor, and the directions will be automatically downloaded to the vehicle.
• OnStar eNav allows customers to send Turn-by-Turn directions directly to their vehicle through MapQuest and Google Maps by selecting “Send to OnStar” on the website. The directions can then be accessed through OnStar’s “Virtual Advisor.”

OnStar’s extensive experience and growing scale have combined to help subscribers through serious weather and other events with its Crisis Assist service.

• OnStar provides routing assistance, hotel reservations, a connection to loved ones and shelter locations to all subscribers (regardless of their subscription level) during crisis events such as hurricanes, wild fires, snow storms, etc.
• The lessons learned from Hurricane Katrina in 2005 prepared OnStar for Hurricanes Gustav and Ike in 2008.
• OnStar saw an increase in call volume of 4.5 times and routing requests 10.5 times over the averages during the evacuation for Hurricane Gustav.

OnStar’s patented Vehicle Diagnostics Platform leads to the safe and efficient operation of current and future vehicles.

• OnStar Vehicle Diagnostics (OVD) runs checks on key operating systems and notifies subscribers monthly with an easy to read email status report so they know when to take action to keep their engine properly tuned which can improve fuel economy by four percent or seven cents per gallon.
• Customers can also request OVD checks on demand by simply pressing their blue OnStar button and asking the Advisor.
• OnStar Vehicle Diagnostics extends GM’s commitment to reducing fuel consumption by encouraging proper tire inflation and following the GM Oil Life System, which can help reduce the frequency of oil changes.

In the Summer of 2011, OnStar will launch OnStar For My Vehicle (FMV), the company’s first aftermarket product.

• OnStar FMV will deliver OnStar’s award-winning services to drivers of non-GM and older GM vehicles on the road.
• It can be installed on most top-selling vehicles manufactured in the past 10 years, including vehicles from Ford, Toyota and Chrysler. 90 million vehicles already on the road are currently compatible
• The product takes the place of a vehicle’s rear view mirror and provides OnStar’s core services like Automatch Crash Response, Turn-by-Turn Navigation and Hands-Free Calling.