I wonder if this requires the dealer to program the vehicles VIN into it.

 

Curious, how have you come to the conclusion that you need to replace the ECM?

 

I wonder if this requires the dealer to program the vehicles VIN into it.

I honestly have no idea, there could be all kinds of issues. The part is new so it won't have another vehicles info in it but it won't have mine either.

 

Curious, how have you come to the conclusion that you need to replace the ECM?

I took it to the dealer for the throttle body issue everyone has and they determined it was the ECM after replacing the throttle body under warranty.

 

Although pasted from a 2012 warranty book, your ECM may be covered under the Federal Emissions Warranty for 8 years or 80000 miles. Have you exceeded either one of those? You didn't mention your year or miles in any of your posts.


Chevrolet Limited Warranty and Owner Assistance Information - 2012
28 Emission Warranty Parts List
The emission parts listed here are
covered under the Emission Control
System Warranty. The terms are
explained in the
Emission Control
Systems Warranty on page 23
under
“
Federal Emission Control
System Warranty
”
and the
“
California Emission Control System
Warranty.
”
Important:
Certain parts may be
covered beyond these warranties if
shown with asterisk(s) as follows:
.
(*) 7 years/70,000 miles,
whichever comes first, California
Emission Control System
Warranty coverage.
.
(**) 8 years/80,000 miles,
whichever comes first, Federal
Emission Control System
Warranty coverage. (Also
applies to California certified
light duty and medium duty
vehicles.)
.
(*) and (**) are 8 years/
100,000 miles, whichever comes
first, for California LEV2 vehicles
equipped with option code NUA.
All listed parts 15 years/
150,000 miles, whichever comes
first, on California PZEV (NU6)
vehicles registered in a PZEV state
except Hybrid batteries and Hybrid
A/C compressors, which are
covered for 10 years/100,000 miles,
whichever comes first.
The Emission Control System
Warranty obligations do not apply to
conditions resulting from tampering,
abuse, neglect, or improper
maintenance; or any other item
listed under
“
What Is Not Covered
”
under
New Vehicle Limited Warranty
on page 4
. The
“
Other Terms
”
presented under
New Vehicle
Limited Warranty on page 4
also
apply to the emission-related
warranties.
Powertrain Control System
ABS Control Module **
Camshaft Position Actuator *
Camshaft Position Actuator Valve
Coolant Level Sensor
Data Link Connector
Engine Control Module (ECM) **
Engine Coolant Temperature Sensor
Fuel Control Module **
Intake Air Temperature Sensor
Malfunction Indicator Lamp
Manifold Absolute Pressure Sensor
Mass Air Flow Sensor
Oil Pressure Sensor Active Fuel
Management
™
(AFM) only
Oxygen Sensor(s)
Powertrain Control Module (PCM) **
Throttle Position Sen

 

It's a 2011 LTZ with 99,700 miles, I over shot the ECM warranty by a good bit.

 

It's a 2011 LTZ with 99,700 miles, I over shot the ECM warranty by a good bit.

Well, I thougt it might be worth a try

 

I need to change my ECM, are there any relearn procedures or data that needs to be transferred from the old one to the new one?

Was the ECM working with the old throttle body, if so the dealer should be able to reprogram the old ECM to the new throttle body without replacing it, provided he is using the latest programming software.

This is no user serviceable pop-in part and from reading the procedures in the '15 GM shop manual get ready to shell out bucks if the dealer cannot communicate for reprogramming or transfer of data from the old ECM module...learned driver operation parameters are not listed for transfer from the old module or the loading of base values for learn-able parameters in a new formatted ECM.... learned functions are likely stored in the individual modules, BCM, tranny, mirror/seats, NAV, etc. ..and VIN number storage is not listed as an ECM data storage parameter.

Appears that specialized GM programming equipment is required with the latest up to date programming software to proceed. Interruption, faulty programming or battery voltage drop during the procedure will likely damage the new module so be ready for the cost of a new battery if the old one is not up to snuff. Old module must first be prepared for removal by downloading existing data and settings for transfer to the new module which does not come preloaded with software.....if the programming equipment cannot communicate with the module for transfer of data, it must be loaded with the current software version applicable to the vehicle VIN., dozens of control functions and sensor monitoring parameters must be programmed including: all A/C operations, cooling fan(s) operation, accelerator pedal position, overspeed handling, air/fuel ratios,fuel pressure, ambient temp, auto start/stop (if equipped), brake booster pressure, air flow, cat converter, camshaft and crank positions and dozens of others.

Sounds like an expensive repair.

 

ECMs rarely go bad. Usually what are diagnosed as ECM problems are actually something else like water in a wireing harness or a loose connection. If you are having throttle body codes and changing the throttle body didn't fix it I would suggest changing the accelerator petal.

 

ECMs rarely go bad. Usually what are diagnosed as ECM problems are actually something else like water in a wireing harness or a loose connection. If you are having throttle body codes and changing the throttle body didn't fix it I would suggest changing the accelerator petal.

First time I have ever heard to replace the accelerator pedal! What is the thinking behind this suggestion? I don't recall anyone with these vehicles having any problems with the accelerator pedal, only the brake switch module by the pedal.

 

The ecm takes a signal "resistance" from the petal and moves the throttle body accordingly. Just a theory, but the petal may be sending a faulty signal causing the ecm to do erratic things with the throttle body, and the ecm is seeing it as an error with the throttle body.

At work we are running about 15 chevy 2500 with the 6.6 duramax all ranging from 2008 to 2015. Some with well over 300000 miles. We have changed maybe 3 petals, so not a common problem, but i do remember when it happens we were getting reduced engine power, and a code that had absolutely nothing to do with the petal. I know your vehicle isnt a 2500, or diesel for that matter, but i do know ecm problems are very rare, and are often another problem that has been misdiagnosed. For kicks, call a parts department at a chevy dealership and see if they have any petals in stock. If they do then its a safe bet that they go bad. It would be an odd item to stock otherwise

 

The ecm takes a signal "resistance" from the petal and moves the throttle body accordingly. Just a theory, but the petal may be sending a faulty signal causing the ecm to do erratic things with the throttle body, and the ecm is seeing it as an error with the throttle body.

At work we are running about 15 chevy 2500 with the 6.6 duramax all ranging from 2008 to 2015. Some with well over 300000 miles. We have changed maybe 3 petals, so not a common problem, but i do remember when it happens we were getting reduced engine power, and a code that had absolutely nothing to do with the petal. I know your vehicle isnt a 2500, or diesel for that matter, but i do know ecm problems are very rare, and are often another problem that has been misdiagnosed. For kicks, call a parts department at a chevy dealership and see if they have any petals in stock. If they do then its a safe bet that they go bad. It would be an odd item to stock otherwise

Interesting information. Like I said though, I don't ever recall anyone with these vehicles having a bad gas pedal module. Perhaps this is the first? Hopefully the OP keeps us up to date with what the problem turns out to have been.

 

Strictly a theory. Like i said, i would call several dealerships and see if the petal is a commonly stocked item.

 

Well, I thougt it might be worth a try

No problem, that was the first question I asked when the they quoted me $850 to replace it.

 

Was the ECM working with the old throttle bod... ...Sounds like an expensive repair.

It gave all of the symptoms of the Stabilitrak error the throttle body gives, suddenly going into limp mode, traction control off on the DIC, everything. The only difference was my car was actually cutting completely off and the starter wouldn't always fire when you turned the key after it shut off. It happened the first time in September and I took it to the dealer and they said the ECM was bad but they had given me such a run around about doing my power steering pump I wasn't inclined to believe them. I took it home and cleaned the throttle body and it ran fine for almost two months then it did it again. In between the two occurancres the warranty on the throttle body was extended so I took it back to a different dealer and had the throttle body replaced, on the way home it quit again. I towed it home and found a new Delco ECM for $100 on eBay and replaced the busted and towed it back to the dealer to have it reprogrammed, I saved myself over $500 and uit runs like a new car now. The ECM is that silver box hanging on the fan shroud, it snaps in it's little holder with no bolts. I changed it under 5 minutes.

 

Strictly a theory. Like i said, i would call several dealerships and see if the petal is a commonly stocked item.

Replacing the pedal is part of the extended warranty on the throttle body depending on which TB yours has, if you have a Hitachi TB you get a new pedal and if that doesn't fix it you get a new TB but if you have a Bosch TB you get a new TB straight away. Mine has a Bosch TB so they put a new one on and it still acted up but with the new ECM it runs like a new car. I got the part off eBay and changed it myself, even with the dealer reprogram and towing I saved myself $500 bucks.

 

It gave all of the symptoms of the Stabilitrak error the throttle body gives, suddenly going into limp mode, traction control off on the DIC, everything. The only difference was my car was actually cutting completely off and the starter wouldn't always fire when you turned the key after it shut off. It happened the first time in September and I took it to the dealer and they said the ECM was bad but they had given me such a run around about doing my power steering pump I wasn't inclined to believe them. I took it home and cleaned the throttle body and it ran fine for almost two months then it did it again. In between the two occurancres the warranty on the throttle body was extended so I took it back to a different dealer and had the throttle body replaced, on the way home it quit again. I towed it home and found a new Delco ECM for $100 on eBay and replaced the busted and towed it back to the dealer to have it reprogrammed, I saved myself over $500 and uit runs like a new car now. The ECM is that silver box hanging on the fan shroud, it snaps in it's little holder with no bolts. I changed it under 5 minutes.

Were you having the issue with stabilitrack and traction control? I am bringing into dealer on Monday for that problem. if so what did you do? I am out of warranty.

John

 

Were you having the issue with stabilitrack and traction control? I am bringing into dealer on Monday for that problem. if so what did you do? I am out of warranty.

John

It was giving every indication of being the throttle body but replacing it didn't fix the issue, so far the ECM has. If the say your ECM is bad and you can be without your car for a few days I'll tell you where to get one and how to change it.

 

They told me the problem is master cylinder leaking into power booster and are replacing them. Thanks for reply and offer of help Brian.

John

 

the stabilitrack and traction control messages--- theres many things that can make those messages pop up.
Non related things.
Even low battery.

is yours FWD or AWD?

 

the stabilitrack and traction control messages--- theres many things that can make those messages pop up.
Non related things.
Even low battery.

is yours FWD or AWD?

It is FWD. I will find out more from dealer today. They are replacing battery for another issue.

 

on AWD vehicles- if voltage drops to 9.x volts..
it disables AWD... thats why I asked.

 

Hi there it's Aug 6, 2024 I have a 2012 traverse LT 175k that lost communication with ECU, code U0100. Engine light went on, now the engine light disappeared and the car won't start, no crank. Says traction control and stabilitrac, parking assist off...I'll start from the beginning... This is my wife car, left her stranded at the store, called a tow truck and brought it to my brother's house. At my brother's house the tow truck driver got into the car started it,and drove it off the tow truck, parked it on the driveway turns it off, tried to turn it back on and nothing... Guy says looks like the starter is going out.. ok so I changed the starter, i went to turn it on and it started fine. So I figured I'm Im already working on this car why not change the alternator so I did...after went to turn it on and it would not start🤦. After an hour or so we tried to turn it on and it did. So I drove it around for like 2 hours. It was wonderful! Nope went to drive it again and it went into limp mode check engine came on and it was kinda getting hot while in idle. Past the 210 mark... Anyways it's been parked for like 3 weeks with the battery disconnect. I went to turn it on and nothing. Idk what up. Anyways I hate this car. Nah jk. It's been a good ride now it's just acting up... The old alternator and starter were fine too. Took them to get tested... So that was a waste of money. I keep reading that the ECU my be bad but idk need to take it to get test. The tpms sensor keep acting up too...rear driver side keeps going out then comes back. Idk.