05 Cadillac sts starter disabled anti theft problem

Ignacio Engineer California Posted   Latest   Edited  
Unsolved
Programming
2005 Cadillac STS 3.6L (7 LY7) 5-spd (5L40-E) — 1G6DW677350120133
No Start

After ecm programing, and program key car won't start, sps2 and autel was use it for key.

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Missing Tests
Shawn Diagnostician
Texas
Shawn
 

You will need to sync Immo with GM Techline Connect. Just go under Immo and select Pcm replaced. Its about 12 minute wait. Should be good to go. Make sure you have adequate programming voltage. Best to use good quality maintainer.

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Helpful
Ignacio Engineer
California
Ignacio
 

I went to theft deterrent and did the learn for rcdcrl, and wait the 12 minutes and said is ready key fob 1 learned. But it shows that message.

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Luke Engineer
Connecticut
Luke
 

Did you do re-learn via autel or sps2?

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Timothy Owner/Technician
Wisconsin
Timothy
 

Did you put the fob in the pocket when relearning the key? SPS2 is not too friendly with the low speed side of the bus on these. I use the Tech 2 and Tis 2000 and rarely have an issue. Ever since the rollout of SPS2, the low speed modules are always hit or miss on these… I'd run a complete scan of the vehicle first, just to see what's happening. Also, it is very difficult to find a good PCM for…

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Ignacio Engineer
California
Ignacio
 

The all ecm died out when warm, so I let know the customer to get a new ecm and ill retry with his old pcm to relear key and yest I put them on the pocket on the center, thank you sir

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Alireza Owner
California
Alireza
 

Is there any DTC code?

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Ignacio Engineer
California
Ignacio
 

let me recheck

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Arsalan Service Manager
District of Columbia
Arsalan
 

Hey Ignacio. Did you replaced ECM or you just programmed it? What was the issue the reason you programmed it?

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Ignacio Engineer
California
Ignacio
 

Replaced an programmed, customer said it was dying out when warm

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Arsalan Service Manager
District of Columbia
Arsalan
 

Was it Used or New?

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Ignacio Engineer
California
Ignacio
 

new

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Timothy Owner/Technician
Wisconsin
Timothy
 

There are NO ‘new’ PCM on one of these. The PCMs were so problematic, that they failed early and often. Everyone of these I program, and I've done many, I inform the client that the chance for failure is very high, but they have to pay me either way, success, or not. But, whatever was installed, it's not new, but reman, and they have as many or more issues, then the first time they failed, and…

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Arsalan Service Manager
District of Columbia
Arsalan
 

I agree with Timothy 100%. Just don't waste your time, Let the customer know whats happening and get a replacement and do the SPS program again.

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Ignacio Engineer
California
Ignacio
   

Thank you, you are right timothy is a reman ecm

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David Diagnostician
North Carolina
David
 

Hi Ignacio, If you have programmed a new ECM and you have communication with the module, try the manual 30 minute learn process.

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Timothy Owner/Technician
Wisconsin
Timothy
 

No thirty minute learn on a push-button start on this year. I know of no push button start that has a manual learn.

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David Diagnostician
North Carolina
David
 

Right you are. The only other alternative for that vehicle (arguably the best choice for a GM vehicle of that vintage) would be to use a genuine tech 2 with TIS 2000. Flash files and security learn would both be available for that Caddy. 😁

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Timothy Owner/Technician
Wisconsin
Timothy
 

Exactly the method I use.

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