× Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!

[FIXED] 07 Cadillac Escalade crank no start

  • Matts Auto
  • Topic Author
  • Offline
  • Premium Member
  • Premium Member
More
04 Sep 2019 19:05 #33419 by Matts Auto
Long story short found no power koeo to injector a & injector b fuses (plus some others). Did lots of testing & found Ecm not commanding pwr/trn relay. Anyone recommend an aftermarket company for a pre-programmed Ecm ?

Please Log in or Create an account to join the conversation.

More
04 Sep 2019 21:47 #33423 by John Curtis
Replied by John Curtis on topic [FIXED] 07 Cadillac Escalade crank no start
I know it’s not exactly what you’re asking for however, if you have a capable scan tool, I would suggest grabbing a used ECM from a salvage yard and do an immobilizer match and rewrite the VIN.

Thinking out loud always helps me in the process.
The following user(s) said Thank You: Noah

Please Log in or Create an account to join the conversation.

  • Matts Auto
  • Topic Author
  • Offline
  • Premium Member
  • Premium Member
More
05 Sep 2019 07:07 #33426 by Matts Auto
Replied by Matts Auto on topic [FIXED] 07 Cadillac Escalade crank no start
I've never replaced with used before but in this case would be ideal. Thanks for the suggestion

Please Log in or Create an account to join the conversation.

  • Matts Auto
  • Topic Author
  • Offline
  • Premium Member
  • Premium Member
More
05 Sep 2019 18:05 #33435 by Matts Auto
Replied by Matts Auto on topic [FIXED] 07 Cadillac Escalade crank no start
Customer decided to go with a preprogrammed unit from the internet that they ordered. Hope that doesn't spell trouble for me!!!!

Please Log in or Create an account to join the conversation.

  • Tyler
  • Tyler's Avatar
  • Offline
  • Moderator
  • Moderator
  • Letting the magic smoke out since 2011
More
06 Sep 2019 05:58 #33441 by Tyler
Following along. :) Genuinely interested to see how the internet special PCM turns out.

You're sure the PCM just wasn't commanding the powertrain relay? Cool! :silly: I've seen very similar symptoms on other GM products, tracked to failed fuse box connections.

Please Log in or Create an account to join the conversation.

  • Matts Auto
  • Topic Author
  • Offline
  • Premium Member
  • Premium Member
More
06 Sep 2019 07:34 #33445 by Matts Auto
Replied by Matts Auto on topic [FIXED] 07 Cadillac Escalade crank no start
I tested at pcm the relay command (none). I can activate relay with test light & make vehicle run.

Please Log in or Create an account to join the conversation.

  • Tyler
  • Tyler's Avatar
  • Offline
  • Moderator
  • Moderator
  • Letting the magic smoke out since 2011
More
06 Sep 2019 08:12 #33446 by Tyler

Matts Auto wrote: I tested at pcm the relay command (none). I can activate relay with test light & make vehicle run.


Good enough for me. :)

Please Log in or Create an account to join the conversation.

  • Matts Auto
  • Topic Author
  • Offline
  • Premium Member
  • Premium Member
More
10 Sep 2019 14:12 #33528 by Matts Auto
Replied by Matts Auto on topic [FIXED] 07 Cadillac Escalade crank no start
Received pcm today, customer had purchased from flashmasters.com out of ohio. Replaced pcm, performed security relearn & started right up. Then performed ckp variation relearn, cleared codes & test drove while checking data & everything works fine. I have to admit i was a little skepticle about the internet purchase but fortunately all is good. We can call this one FIXED!!
The following user(s) said Thank You: Noah

Please Log in or Create an account to join the conversation.

  • Not Allowed: to create new topic.
  • Not Allowed: to reply.
  • Not Allowed: to add attachements.
  • Not Allowed: to edit your message.
Time to create page: 0.565 seconds