Resetting ECM 2012 Impala - Chevy Impala Forums
PCM and Technical Tuning PCM and High end tuning discussion here.

User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 07-25-2016 Thread Starter
Member
 
chevy67's Avatar
 
Join Date: Jul 2016
Location: You don't want to live here.
Posts: 48
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Resetting ECM 2012 Impala

Just got a used 2012 Impala from a dealership. Doesn't accelerate as smoothly or quietly as my 2002 Buick LeSabre. Want to re-set the ECM so it can learn my driving style.


Unhooked the battery cables today and connected them together while cleaning the corrosion off the terminals and clamps. They were unhooked for over 20min. When I connected them back up the only thing that was reset was the clock and fuel range gauge.


I expected the radio, trip odometer and setable settings to be changed but weren't. Should they have been? I do notice the trans shifts differently and the acceleration is also different.


Thanks!!
chevy67 is offline  
Sponsored Links
Advertisement
 
post #2 of (permalink) Old 07-25-2016
Senior Member
 
Big3's Avatar
 
Join Date: Jan 2016
Location: Ohio
Posts: 124
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 22 Post(s)
Thanks: 3
Thanked 17 Times in 16 Posts
Could have just pulled the ECM fuse for 3min

2015 LTZ
Big3 is offline  
post #3 of (permalink) Old 07-25-2016
Super Moderator
 
jtrosky's Avatar
 
Join Date: Jun 2013
Location: West Grove, PA
Posts: 12,424
Mentioned: 76 Post(s)
Tagged: 0 Thread(s)
Quoted: 932 Post(s)
Thanks: 992
Thanked 2,307 Times in 1,803 Posts
Garage
There is probably a separate TCM fuse too.. Disconnecting the battery cables and tapeing them together is what most people do to clear everything... you can also turn the key to ACC mode with the battery cables taped together to drain all power from the system quickly (instead of waiting for a while). You're key will get stuck in the ignition until you reconnect the battery though.

Honestly, I usually just leave the cables taped together overnight...

Sent from my SM-T230NU using Tapatalk
jtrosky is offline  
Sponsored Links
Advertisement
 
post #4 of (permalink) Old 07-25-2016 Thread Starter
Member
 
chevy67's Avatar
 
Join Date: Jul 2016
Location: You don't want to live here.
Posts: 48
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by Big3 View Post
Could have just pulled the ECM fuse for 3min
There isn't an ECM fuse. There's 3 "ECM IGN" - Electronic Control Module-Ignition, "ECM/TCM" - Transmission Control Module & "ETC/ECM" - Electronic Throttle Control.

Which one and what's the procedure for doing it?


Should I have lost more than the clock & fuel range?

Thanks
chevy67 is offline  
Sponsored Links
Advertisement
 
Reply

Related Threads
Thread Thread Starter Forum Replies Last Post
Introducing my 2012 Impala 9C3 LFX 9C3 Introductions & Welcome Forum 33 11-03-2018 07:30 AM
Bluetooth issue on 2012 LT Impala. GiMiK Chevy Impala 8th Gen Discussion 24 01-02-2018 07:02 AM
Engine Air Filter 2012 2013 CHEVY IMPALA LS LT LTZ 2014 2015 2016 IMPALA LIMITED RSS Bot Impala Diecast Toys Cars on eBay 0 11-29-2017 07:10 AM
x1 FRAM CA11227 Air Filter 2012 2013 CHEVY IMPALA 2014 2015 2016 IMPALA LIMITED RSS Bot Impala Diecast Toys Cars on eBay 0 09-29-2017 12:51 AM
2012 3.6L Impala RPM surging stopped at light with AC on flymorenow Chevy Impala Discussion 17 09-26-2017 11:42 AM


Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevy Impala Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome