No response from ECM

[Tordne]

SledHead,

I posted on your thread on Duramax Diesels yesterday with the actions to take. Please attempt those recommendations and send through the resulting trace if you still have issues. It' described in my post over there (post #10).

Cheers,

[Sledhead]

Follow my progress here; http://www.duramaxdiesels.com/forum/...ad.php?t=33882

[Sledhead]

Try with the latest software/firmware: Release-Candidate-2-Aug-19-2011

V7.5.7.178, V8.2.1.168, bb 2.07.03, fw 2.07.21.

http://duramaxdiesels.com/forum/show...271#post494271

Done this and way more please help

[joecar]

Can you check the firmware version in your V2 via the LCD/keypad...?

Could the other modules on the serial bus be interfering with the flashing...? If so then pull fuses on the other modules.

I noticed on the other forum you said "Controller is locked with a custom key".

[Blacky]

Hi Sledhead,

I'm looking at your trace files now, hopefully I'll have something for you to try soon.

The original PCM is dead. The second PCM appears to have a faulty lock. Is it possible the second PCM was tuned by another software package or another tuner that may have altered the lock - i.e. that may have locked the PCM?
Meanwhile, I'm trying to figure out some options to try to get past the lock.

We'll send you a replacement VIN license to cover the license for the original PCM. Please send your FlashScan serial and auth code as per the instructions on this page http://support.efilive.com/kb_articl...2143-YUOG-8049 to me (paul@efilive.com)

Regards
Paul

[Blacky]

Can you please try using the key $3C7B to unlock the controller? Include the $ sign when you enter the key.

Regards
Paul

[Sledhead]

I tried but no luck. I've installed a 3rd ECM and it has reportedly accepted the stock tune. It cranks but no start and no codes. I'm waiting for the batteries to top up then going to attempt to change the VIN in the ECM. What else could be the issue? What needs to be done with VATS?

[Sledhead]

I think the 3rd ECM is bad too. Did the VAT Relink twice and did Key-On 15 min off 30 seconds 4 times too. No codes, crank but no start. Looking for a fourth ECM but hopefully we can unlock the 2nd one? I'll need that license too.

[joecar]

Do any pids (STATExx) give any indication or reason for no start...?

[Blacky]

I think the 3rd ECM is bad too. Did the VAT Relink twice and did Key-On 15 min off 30 seconds 4 times too. No codes, crank but no start. Looking for a fourth ECM but hopefully we can unlock the 2nd one? I'll need that license too.

License sent.
If you send the locekd PCM to EFILive in Melbourne Australia we can unlock it for you. It takes about 3 days and the fee is US $50 (plus shipping). It may be cheaper to find someone in the US that can do it for you. Have you tried Pcmsforless (www.pcmforless.com), I think they offer an unlocking service.

Regards
Paul