My first project was to troubleshoot a "A/C Clutch Command On" Issue.  After replacing a HVAC Automatic Control Module the command issue was still present.  MaxiDAS was critical in helping me to read the command status and consequently lead to isolating the issue to the ECM, with the aide of Power Probe 3 as well.

 I am looking for a used ECM and have located several that should match up.  I will make sure that the #'s match or cross for this vehicle.  As stated I'm working on a 05 Saab 9-7x with the GM 5.3 V-8.  This vehicle is a GMC Envoy, Trailblazer that has been rebadged with minor cosmetic changes, but the heart and soul is GM.  As a matter of fact I had to enter GM in order for the Scan tool to recognize. 

My question is can the tool successfully program the used PCM for this application or will I have to take it to the dealer?

Or do I look for preprogramed ECM that you supply the VIN and they  program a reman and send it to you ready to plug and play?

I've watched several training videos and one to note of the gentleman who reprogramed a 2005 Honda Pilot successfully.  This leads me to believe that it is possible to do if you follow certain defined steps.  

Q.  Does the tool walk you through the process or has someone, such as the 05 Honda Video, explained the correct and workable method to have a successful experience with any vehicle or make?

I hope to receive a answer quickly so I can make a informed decision as to the way I should address replacing the PCM in The Saab 9-7x.

Thanks in advance

Dan 

Great Cars

I am sure that I read that the MaxiDas 708 would not only flash but for sure reprogram keys and do tire reset proceedures and much more.  

Now the real story of the tool is getting clearer.

I spent weeks watching Autel videos and reading testimonies, and reading and rereading the spec's and I was convinced that this tool did it all.

Not a happy camper.

Talk about misleading information.  The Honda Pilot Video was very straight forward information and details about the capabilities of the MaxiDas 708.  Main reason I bought the tool. 

Thanks for you response ede65

I'm having a issue with the A/C Clutch not responding to command, yet the clutch can be Power Probed to work.  I have run thru the wiring diagram and followed every instruction to the end, yet the ECM is not sending a command to the A/C relay.  I've triple check all the wiring for open or shorts and have not found any.  I've check all fuses.  I've checked all continuity within the circuit and everything is good.  I've replaced the HVAC control module.  I've replaced the ECM.  I've checked the system for leaks and proper charge and that is good.   I've followed the AllData process step by step and I'm stumped.  The low pressure switch when jumped does not activate the A/C clutch.  The A/C relay has been swapped with several known good ones and that has not solved the issue.  Without a command signal the A/C will not engage.  I've explored all amibient temp. sensors.  I've even pulled the fuse box apart under the hood and inspected each contact for continuity and no issues all checked good.  I've checked all connections which all the grounds and power wires good through.  I have not preformed any voltage drop test, only because I am still uncertain of that procedure and was not directed to do so in the procedures or step by step diagnoistics.  I'm pulling my hair out trying to find a solution.  I almost want to condemn the A/C Clutch for a bad ground and the ohms test showed bad, but when I power it up independant it works.

Any insights would be helpful.

The Autel does tell me that a signal was sent but the clutch is not engaging.