I get the tool the vxdiag vcx nano gm. I have my friend drop off his old laptop I do everything the instructions say to do.
Its like having a tech2 on your laptop. It works perfectly just take your time installing it.. and search for the latest update on the software.. and make sure. You update the vcx nano.
Worked better than the actual Tech2 for my 2014 GMC Sierra 3500HD LML 6.6 Duramax. It is correct, Tech2 only goes to year 2013 but GMC held onto the the LML for the last year for the Sierra in 2014.
I replaced a DEF heater after getting stuck in Limp mode with only 20 miles @ 55mph before going down to 4mph.
You will need to assume 2013 Truck GlowPlug control. Command each heater, 1 – 2 – 3 ON for 15 seconds then OFF and it will clear the “Service Exhaust Fluid System” limp mode.
Watch the included video on the DVD and follow each step. GDS2 throws a Virus alert, disable antivirus and install. Recommend using a dedicated laptop that is only used for this Tech2Win usage. but I haven’t had any negative issues so far.
Took me 45 seconds to clear limp mode and now have full access to other functions and controls for my truck. Well worth the cost if you’re a DIY person and avoid dealership costs to diagnose and repair.
I would highly recommend it to anyone who works with gm cars a lot. Just make sure to check out the blog from the manufacturer for all the updates and troubleshooting, because otherwise your experience will be rough.