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04/11/2021

 GMC Alex Choate (1810Pts.)

0

Do I need two keys for a 2018 GMC Sierra 2500 Diesel

Hi, I"m Looking at adding the fortin Evo all to my truck and i wanted to confirm two things. Firstly when i go to flash the module it says for the T harness THAR-GM5 but fortin gives you instructions for the t harness THAR-GM7 and theres not option to select the GM7 only the 5 could i still use the 7 and flash it as the 5. My second question is do i still need two keys to program or would i be able to just use one
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24/12/2020

 GMC Juan Becerra (390Pts.)

0

2020 GMC SIERRA 3500 Diesel

Will the THAR GM 7 work using the guide# 91061 on a 2020 diesel? I'd suppose it's the same wiring and programming of a 1500 just turn on diesel mode maybe?
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12/03/2020

 GMC Josh Ley (500Pts.)

0

Issues With THAR-GM7 in 2016 Sierra 3500 (guide 91291)

THAR-GM7 EVO-ALL and Crimestopper RS4-G5 (datalink; only wires other than Datalink connector from the starter are power and ground because for some reason the starter would not work off the power provided by the DLC) Module programmed fine. Remote start worked several times in a row right after install. Fast forward to next day, delivery of vehicle--remote start worked one time. After that, the ignition would power up but would not attempt to crank. Tried a dozen times, checked plugs. Then the dreaded "service immobilizer system light" came on the dash and I just about S**T a brick. At that point I tried to start with the key--no crank. Wait 30 seconds, thankfully it started up. Reprogrammed module (decryptor process and all) Remote start works fine a dozen or so times, I send the customer on his way. Get a call back within an hour that it's doing all kinds of weird things--locks are acting strange (randomly locking/unlocking) remote start will sometimes work, sometimes not. The weirdest issue is that when he starts with the KEY, drives around, stops, turns the KEY off, the truck will continue running UNTIL the brake is depressed. Could this be a firmware issue? I'm just reviewing the installation manual and it mentions "modules manufactured between certain dates" enable option E5. When I read this during installation I assumed that it was referring to the vehicle manufacture date, not the module. I don't believe the module was manufactured almost a year ago or more, as it came packaged with the THAR-GM7 which just became available.
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12/03/2020

 GMC Josh Ley (500Pts.)

0

Issues With THAR-GM7 in 2016 Sierra 3500 (guide 91291)

THAR-GM7 EVO-ALL and Crimestopper RS4-G5 (datalink; only wires other than Datalink connector from the starter are power and ground because for some reason the starter would not work off the power provided by the DLC) Module programmed fine. Remote start worked several times in a row right after install. Fast forward to next day, delivery of vehicle--remote start worked one time. After that, the ignition would power up but would not attempt to crank. Tried a dozen times, checked plugs. Then the dreaded "service immobilizer system light" came on the dash and I just about S**T a brick. At that point I tried to start with the key--no crank. Wait 30 seconds, thankfully it started up. Reprogrammed module (decryptor process and all) Remote start works fine a dozen or so times, I send the customer on his way. Get a call back within an hour that it's doing all kinds of weird things--locks are acting strange (randomly locking/unlocking) remote start will sometimes work, sometimes not. The weirdest issue is that when he starts with the KEY, drives around, stops, turns the KEY off, the truck will continue running UNTIL the brake is depressed. Could this be a firmware issue? I'm just reviewing the installation manual and it mentions "modules manufactured between certain dates" enable option E5. When I read this during installation I assumed that it was referring to the vehicle manufacture date, not the module. I don't believe the module was manufactured almost a year ago or more, as it came packaged with the THAR-GM7 which just became available.
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21/01/2020

 GMC Brad (180Pts.)

0

Will the THAR-GM7 work with a 2015 Sierra?

When looking up the 2015 GMC Sierra, it lists the THAR-GM3, GM5, and GM7. Whe I look at the guide for the GM7, it only lists 2019. The harness appears to be correct, but I would like to confirm before purchase. Thanks in advance, Brad
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10/01/2017

 GMC Derek Hodgson (190Pts.)

1

2011 GMC Sierra 1500 Remote Start Lock X6 WHY?

I installed my GMT4 System and was super easy to install and program BUT I have to press the lock button on my oem remote six times not just the three as described. Also can I stop the horn from honking all six times when using remote start option? And Last but not least how do I know from 800ft away if my truck has stopped after the six pushes of the lock button. Really need to get this to three times lol.
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