HELP Check engine light on!

Reply Subscribe

Thread Tools

Search this Thread

Jun 16, 2008 | 02:17 PM

biskitman

Thread Starter

Racer

Joined: Apr 2008

Posts: 347

Likes: 0

From: Chantilly VA

HELP Check engine light on!

New 2008 M6, NPP, 1900 miles. Was driving Sunday and the 1-4 shift light came on, pretty much locked up the transmission except gears 1 and 2 when the check engine light came on. I pulled over, shut off car restarted hoping to reset the light. Car started, shifted fine in all gears, check engine light remains on. Had onstar diagnose the problem and they said the ECM controller regarding the 1-4 shift in the transmission has malfunctioned and that I need to take the vehicle in for review by dealer. Is this something where I can just disconnect the negative wire on the battery and reset the computer on the car? No error codes appeared on the DIC. Anyone ever had this happen and will a battery disconnect eliminate light and reset the system? Car shifts fine now.

Jun 16, 2008 | 03:32 PM

johnodrake

Moderator

Joined: Dec 2002

Posts: 40,893

Likes: 4,345

From: Lakewood Ranch, FL

Quote:

Originally Posted by biskitman

Before taking it to the dealer (especially if you have had a tune) I would try the power off reset method. If every thing is normal, you should be good to go. A good tool to have around is a scan tool since there are no codes displayed on the DIC like in the C5. Using the scan tool you can see what code(s) are active and reset the CEL. You can get one at Autozone or Wally World (Wal Mart) or many other places. I got one on Amazon.com. Be sure to get an OBDII CAN enabled reader.

Jun 16, 2008 | 08:44 PM

DennyBlueC6

Racer

Joined: Aug 2007

Posts: 275

Likes: 0

From: Southern CA

Jun 16, 2008 | 09:45 PM

kelp

Drifting

Joined: Oct 2005

Posts: 1,549

Likes: 1

From: Roanoke Virginia

Then bypass the damn thing.

Jun 16, 2008 | 10:06 PM

patton

Safety Car

Joined: Jun 2004

Posts: 3,553

Likes: 739

From: panama city beach florida USA

St. Jude Donor '09

take it back to the dealer. ya can get a code reader but are ya gonna pull the tranny out if it needs work ?

Jun 16, 2008 | 11:11 PM

ben dover

Team Owner

Joined: Dec 2003

Posts: 21,847

Likes: 140

From: When all is said and done... there is a hell of a lot more said than done. Riverside,Texas

St. Jude Donor '05 thru '26

Quote:

Originally Posted by patton

take it back to the dealer. ya can get a code reader but are ya gonna pull the tranny out if it needs work ?

He didn't get a "check tranny" light.

Jun 17, 2008 | 08:43 AM

biskitman

Thread Starter

Racer

Joined: Apr 2008

Posts: 347

Likes: 0

From: Chantilly VA

Disconnected the negative terminal on the battery, let sit for a couple of minutes and light went out. Seems the reboot fixed the issue!

Jun 17, 2008 | 09:19 AM

DennyBlueC6

Racer

Joined: Aug 2007

Posts: 275

Likes: 0

From: Southern CA

Now at Southern Car Parts....

Do you hate the 1-4 skip shift installed on the C6 Manual Transmission? This little device will elimate that annoying issue.

This kit will allow you to disable the Computer Aided Gear Selection (CAGS) feature of your C5 Corvette's 6-speed gearbox. This kit uses genuine Delphi Packard Electric Systems division connectors, plugs and seals to protect your wiring harness and CAGS solenoid to allow you to re-connect the harness for full CAGS function, if you so desire. This kit is designed for use on both the standard MN6 Corvette's 6-speed gearbox and also the M12 Z06 Corvette's 6-speed gearbox. No permanent modifications are required to install this product.

Takes 5 mins to install and is easily reversable.

Each Kit comes with complete installtion instructions.

NOTE: This kit will prevent the CAGS solenoid from engaging but the "1 to 4" light on the dash will still illuminate when skip shift conditions are met.

Click here to purchase....
http://www.southerncarparts.com/prod...roducts_id=104