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Old 03-27-2015, 09:28 PM   #1
revobasher
 
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Drives: 2013 ZL1
Join Date: Oct 2014
Location: Blaine, MN
Posts: 552
ECM/ECU Died.. JK CANBUS issues with FPCM.. Argh

Got my car back finally after the JDP 850 install and tune. I put about 50 miles on the car last Friday. Other than what appeared to be some misfire and the backfiring at cruising speed (with periodic check engine light) it seemed fine.

Saturday morning it fired up and I noticed check engine line was flashing before I even left the driveway. Went away after a few mins. Got about a mile away and that is when dash lit up, speedo\tach stopped working, random service notifications displayed (suspension, power steering, etc) as well as many other buttons, TCS, etc and a few center console gauges. Basically went bar shut crazy. Haha. Also, noticed the car lost power and wouldn’t shift out of first. I immediately shut it off and it fired back up. No change and I nursed it home.

Once home I tried to hook up my scanner to try and read codes and the scanner could not connect. Turned key and it wouldn’t not turnover. I did disconnect the battery to reset the ECU but that didn’t make a difference either. Very odd.

Towed it back to the shop and they checked all grounds and couldn't find any issues. Took it to the dealer and turns out the ECM that is used has a known problem as well as the wiring having pin contact issues. Basically the pin contacts become loose which of course causes issues. Just curious if anyone has run into this?

Also, shockingly enough the dealer is going to warranty it!
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2013 ZL1 - Blue Ray Metallic
JDP 850 Package
740hp/700tq @14lbs on E85

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Last edited by revobasher; 04-01-2015 at 05:09 PM.
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