Category: 2008 cadillac escalade code u0073

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Thread starter Gretsch Start date Nov 4, Gretsch Well-known member. So I got this code today. Anyone know anything about it? Carter Administrator. Doesn't Sound Good I saw that. I also saw this too. Keep in mind that the gage testing and any programming needs to be done at a GM dealer using the GM Tech 2 scan tool.

If they respond correctly to that command that means the gages and wiring to the gages is fine and the part s responsible for sending info to the gage is inaccurate. If they don't sweep ok then suspect a faulty cluster. To do the sweep test it needs to go to a GM dealer though. The gages not being accurate is common on the older year trucks and a cluster is the fix along with programming the new cluster using GM software.

This intermittent scenario should not cause other modules to lose communication, only the BCM.Full Name. Phone Number. Email Address. So your check engine light is on. Or maybe a whole bunch of error signals have turned on at once. But there are other things that could indicate a U code to appear as well.

This may sound obvious, but check your voltage before you look at anything else. Your PCM requires a full charge to work properly. If your battery is pushing anything less than 12 volts, try replacing it with a new one before you move on to anything more complex.

Chevy Silverado No Communication

Before you start doing anything more complex, examine and additional error codes you might have encountered with the code reader. These can mean there are deeper, underlying issues with your engine, so we want to rule those possibilities out first. If the problem is with your ECM, diagnose that carefully before proceeding.

The next thing to do is to check your PCM wiring harness for faults. Replace the wiring harness immediately and see if it solves your problem. The next thing to do is check your Can C Bus. Use your code reader to see if there are any codes that indicate trouble with the CAN C bus. If power is flowing normally, the issue is with your PCM itself.

We talk about more specifics in our PCM buying guide.

Q: hi the code p0700 came on on my 2008 escalade how can i fix this?

Fixing any kind of PCM malfunction can be a real headache. Not only does it require some technical knowledge, but replacing your PCM itself is can be intimidating. If you decide you need professional help, consider giving Solo PCMs a call. Our experienced technicians are always ready to assist, simply call us ator contact us directly on our website. Sign up for the latest offers, news updates and more. Related Posts.

How to Test a PCM Modern cars rely on computers to manage their various systems.

2008 cadillac escalade code u0073

For example, when was the last time yPlay Now. Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins. Tech Notes What does this mean? The auto repair labor rates vary widely across the country, and even within the same city. How much do you know about cars? Take the AutoCodes. Operating information and commands are exchanged among the modules.

The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised, and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is ms. Each message contains the identification number of the transmitter module.

U0073 CADILLAC - Control Module Communication Bus OFF

The serial data circuit is how the devices in the vehicle communicate with each other. When the ignition switch is in RUN, each device communicating on the serial data circuit sends a state of health message to ensure that the device is operating correctly.

When a device stops communicating on the serial data circuit, for example, if the device loses power or ground, the state of health message, it normally sends on the serial data circuit disappears. Other devices on the serial data circuit, which expect to receive that state of health message, detect its absence; those devices, in turn, set a DTC associated with the loss of the state of health of the non-communicating device.

The DTC is unique to the device which is not communicating, and one or more devices may set the same code. A loss of serial data communications DTC does not represent a failure of the devices that contain the stored code. Get Access to Factory Service Manuals. Need more help? Get the U Cadillac code diagnosed by a professional: Find a repair shop in your area.

Why is the Engine Light ON? Repair Importance Level: 3.Vehicle pulling p and u, warning lights illuminating, trac control stops working and RPM's wig out bad. It acts like it wants to shut off.

Also not sure what this wire is, I included a pic. But it looks like it broke. Not sure what it is or if it's supposed to be connected.

Do you. Sorry for some reason it wont let me upload, but the wire in talking about is a small wire coming off of the bolt on the side on the fuse located on firewire.

Was this answer. Good evening, The is a general code for the transmission indicating there are other codes. The 73 is a communication issue.

2008 cadillac escalade code u0073

The most common issue is dirty connections at the connectors for the module. I posted the location of the module for you below.

2008 cadillac escalade code u0073

Diagnostic Procedure Instructions provides an overview of each diagnostic category. The serial data circuits also connect directly to the data link connector DLC. The vehicle power mode requires serial data communications. The module uses default values for all parameters received on the serial data circuits. The module inhibits the setting of all other communication DTCs.

A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction. Refer to Data Link References to determine which serial data system is used for a specific module. This DTC cannot be retrieved with a current status. Images Click to enlarge. Okay, great. Thanks for your reply.

I have got a couple things i'm going to check on it today before I resort to getting another TCM. I only have al very basic scanner al the moment. Only pulls basic engine codes so i'm not able to check any of that further.

I am currently in school for high performance modification certification. So i'm not clueless by any means but have a lot to learn as well. And i'm limited to this basic scanner currently. Let me know when you get an advanced scanner. Then you can monitor the solenoids and command them on and off. Roy Was this answer. Is there a place I can rent one? Or do you think replacing the TCM will fix the problem? That was the route I was going to go for now.

You would have to call around and see if they will rent one. The TCM is an expensive guess since you need to buy a new one and have it flashed or programmed to your car.

2008 cadillac escalade code u0073

I attached the location and procedure for you below. Roy Images Click to enlarge. I'm on my way to Pick-N-Pull now.This trouble code refers to a transmission control malfunction. This can mean a number of different things. The transmissoin could be damaged internally or there may be some sort of electronic malfunction with the transmission. I would recommend having a qualified professional who is experienced in transmisison diagnostics inspect your transmission for damages.

There is a great article about this trouble code that you might read that gives more detailed information about this issue. Q: hi the code p came on on my escalade how can i fix this? My car has an automatic transmission. Andrew Quinn Automotive Mechanic. The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details.

Home Questions. What others are asking I was just about out of gas and almost to has station when a red lightening bolt started flashing and the car started sputtering, The red lightning bolt indicates that there is a problem wit the electronic throttle control unit.

This may be for a specific reason or may be due to a slight glitch. Try resetting the throttle control unit by doing the Read more.

How long should my front brake pads last on my lexusyear? Hello, great question! Brake pads can last anywhere from 25, miles. It has a lot to do with your personal driving habits, and the quality of the brake pads you purchased. You should contact whomever replaced the pads and ask Paint chipping all over, can I protect the paint?

The problems you are having with your paint on your CRV is not isolated to just your vehicle.Play Now. Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins. Tech Notes What does this mean? The auto repair labor rates vary widely across the country, and even within the same city. How much do you know about cars? Take the AutoCodes.

Cadillac U0073 Control Module Communication Bus Off

Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network.

The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is ms. Each message contains the identification number of the transmitter module.

Get Access to Factory Service Manuals. Need more help? Get the U Cadillac code diagnosed by a professional: Find a repair shop in your area. Why is the Engine Light ON? Repair Importance Level: 3.Play Now. What does this mean? Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins. How much do you know about cars?

Take the AutoCodes. Tech Notes What does this mean? The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network.

The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is ms. Each message contains the identification number of the transmitter module. Get Access to Factory Service Manuals. Need more help? Get the U Cadillac code diagnosed by a professional: Find a repair shop in your area. Why is the Engine Light ON? Comments Help us improve AutoCodes. Leave a comment below or tell us if the information above help you fix the code.

What are the symptoms on your vehicle for the U Cadillac code? Have you replaced any parts? Any information is appreciated. Repair Importance Level: 3. Home - About AutoCodes. Posted and Edit by AutoCodes.