LS Gen 3 ECM Engine Programming Control Module Reader Diagnostic PCM Bench

don't listen to all the bad reviews !, this baby worked perfect out of the box for p59 2004 silverado HP Tunners plenty of power dont know what the other guys using this plugs into wall better than a batt , god speed -

Worked Flawless. No extra steps just plug in and flash away!

5 stars because it does what it's intended. However, check the wiring before using.Mine was wired in reverse polarity, therefore, would not work.Furthermore, the ground pin was in the wrong spot and needed to be moved to pin one. I referred to the sloppy mechanics wiki to get the proper pin connections.Additionally, the connector to the PCM is pretty cheap and doesn't fit great.Lastly, this works just fine and does exactly what you expect it to do. I was able to read and write without upgrading the power supply though I was fully prepared and okay with doing so.UPDATE 4-16-2024,I ended up upgrading to a larger power supply as the one supplied would not work on the P59 pcm. If your on a 512 P01 pcm it should work but be ready to upgrade the power supply potentially.

Worked as promised .

I purchased this so I could do off-board programming on a GM PCM (2005 Silverado 5.3.) The power supply was too small, most of the wires did not make it into the crimps, and the Ground wire did not connect to any of the ground pins of the PCM. Moving the ground, soldering all of the connections and jumper wiring it to a battery it almost worked. After programming, if you completely remove the power, the software stays but the VIN doesn't lock in, so I had to add a switch to the ignition lead, now it works fine. So really, I used the PCM connector and the DLC only, but I did get my truck done.

As others have stated, the polarity was flipped and wires in the incorrect spot. After a little tinkering and power it with the actual car battery, this was good to go. 3/5 because I was able to make the product work for me and my needs but for someone without the knowledge, this would be useless.

It is cheap but it can work. I found that they wired mine right but the power supply is too weak. It would only read with my wireless OBDlink MX, it wouldn't write. I switched out to a better 12 volt power supply and my OBDlink still wouldn't write. I had to use an OBDX Pro wired or HP tuners wired to get it to write. LS droid says the computer should be at 13 volts and I see folks recommending the Belker 45w Universal power supply for clean power to write. I am going to order one and see if my OBDlink MX will work on wireless.It isn't a bad deal but know that the power supply (which looks the same as the another more expensive ones on Amazon) will need to be replaced. There also isn't a switch to turn the computer on and off for the key cycle. But it is cheap....

double check your placement of your ground wire

Muy practico!

I was a bit hesitant after reading a few negative reviews, but the unit I received works perfectly. I checked for the issues others mentioned—Pines in wrong order, and bare connections—and mine had none of those problems. Build quality seems solid, and it's doing exactly what it’s supposed to. Glad I took the chance on this one.

Better off buying else where, Didn't come when it was suppose to, and on top of that computer doesn't read...... faulty crap.

Tried it out as soon as I got it. Wouldn't power up any computer. Did get it to work after un-taping the harness they had and separating the ,+ve and -ve power wires

Had to completely re-wire. Came with power supply positive and ground reversed as well as ground pin in incorrect location. Very poor quality product.