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Range Technology has a start stop module that plugs into the OBD port. Their website doesn’t list the ‘19 Blazer, but I called and spoke to them and they guarantee it to work, saying the 3.6 engine is still the same, so I ordered it and installed it today, works perfect, just like they said. Range Technology has it listed for $199, and has a pop up discount for 10% off plus free shipping, but Auto Anything is an authorized dealer/supplier and have it listed at $144 with free ship or $5.95 overnight fed ex. Hope this helps, didn’t want the Trifecta download to the ECU, and was waiting for Steve at smartstopstart.com, but he didn’t have a timeframe for completion.
 

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renewing an old discussion, the blazer does have a disable feature. Shift to N.
some might find it inconvenient, but your hand is right there, or like me, resting on it. What's a flick of the wrist?
tested it every time I'm out driving, never goes to auto-shutoff if it's N.
 

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Range Technology has a start stop module that plugs into the OBD port. Their website doesn’t list the ‘19 Blazer, but I called and spoke to them and they guarantee it to work, saying the 3.6 engine is still the same, so I ordered it and installed it today, works perfect, just like they said. Range Technology has it listed for $199, and has a pop up discount for 10% off plus free shipping, but Auto Anything is an authorized dealer/supplier and have it listed at $144 with free ship or $5.95 overnight fed ex. Hope this helps, didn’t want the Trifecta download to the ECU, and was waiting for Steve at smartstopstart.com, but he didn’t have a timeframe for completion.
Good to know the Range disabler works. Which one did you buy since they still don’t have one for a Blazer. And is it still working? And side effects? Thanks much. Steve
 

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You can disable the start/stop feature in the 2019 Blazer by opening the hood, starting the engine, then closing the hood. When this is done before driving, the engine will not stop when you are in traffic, at a light, or stop sign. Works every time!!
 

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I posted in another thread also but cant find it now. I stopped at a traffic light the other day, the Blazer shut off. I realized it was stuffy so I pushed the temperature down button (HVAC screen displayed) and the vehicle started. Odd? I tried again at the next stop light, the action repeated. I think it is odd but I have been able to reproduce it 5/6 times. Also works by turning the temperature knob down. Just another odd programming item for auto start/stop.
 

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So I have a 19 RS and noticed when pulling a trailer the vehicle does NOT shut off when stopping ....... So I just leave a 6 flat to 4 flat adapter in the trailer plug and this son of a bitch hasn't shut off since !!! Works for me , I almost traded it back in until I got this to work
 

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2021 2LT Blazer V6, White on Black
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My 2021 3.6L has a Start/Stop Disable button on the dash right next to the hazard button. As mentioned earlier, you have to press it each time you start the truck for it to take effect. However, I've also noticed that if you have the A/C on the Start/Stop feature doesn't kick in. Personally, I don't mind it too much. I've learned to time it and let my foot off the brake pedal before traffic starts moving or the light turns green to avoid any throttle lag.
 

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Unfortunately, the Blazer does not have a disable feature/button. Some people have said, you could put it sport mode and it will disable the start/stop. So far, that is not true. I will continue to try and find a way. No, I haven't tried a module.
I have an 2019 Blazer RS and I place the Gear Shift Lever to "L". This will give you the option to set the automatic transmission from L1 to L9 while in "L". Using the button on the left side of the gear shift lever to set it to L9. This will disengage the auto shut off and allow you to drive normally as you would if you didn't have a an auto shut-off. You just have to remember that you are in "L" when shifting to "R" or "P". Most of us don't have to look, we just move the gear shift lever forward twice to "P". With it in "L" you have to move it forward three gears to "P". So Be careful and make sure you are in the right gear position that you want before releasing that brake. My Dealership showed me this during my test drive before I purchased my Blazer RS.
 

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After shifting into L and toggling to 9, do you leave the car in L or shift back to D to actually drive the car?
I have an 2019 Blazer RS and I place the Gear Shift Lever to "L". This will give you the option to set the automatic transmission from L1 to L9 while in "L". Using the button on the left side of the gear shift lever to set it to L9. This will disengage the auto shut off and allow you to drive normally as you would if you didn't have a an auto shut-off. You just have to remember that you are in "L" when shifting to "R" or "P". Most of us don't have to look, we just move the gear shift lever forward twice to "P". With it in "L" you have to move it forward three gears to "P". So Be careful and make sure you are in the right gear position that you want before releasing that brake. My Dealership showed me this during my test drive before I purchased my Blazer RS.
 

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From everything I have seen, the new Blazer doesn't have a Start Stop disable button. Some GM vehicles do, some don't. There are aftermarket companies that make Start Stop modules that plug in to disable the start stop system. Has anyone had any experience with the module yet?
My dad is a mechanic and owner of his own business. I have the chevy blazer 2019 and asked the same question. The car doing that is not good on your starter. You put your car in low and push the + button on the shifter and push it until it goes into 9th gear. It will show on your dash in lower right corner.The only down fall is that you have to do it every time you restart your car but once you get used to it it becomes automatic. Hope that helps! It would save you money.
 

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2021 2LT Blazer V6, White on Black
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I wouldn't worry about the starter. Its significantly beefier than 'regular' starters. Its specifically designed to work with auto-stop systems and the increased number of starts. The oil is also designed to coat/stick to metal parts better so there shouldn't be any extra metal-on-metal wear on the motor from all the startups.
 
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