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Battery and PCM Installation & Flashing

24:59
34:53
40K views

At 24:59 in

Budget Turbo Yukon XL Build: ECU is FRIED! Junkyard Parts Hunting + Tips To Identify Parts

What happens here

The new XS Power battery is installed in the vehicle. The damaged PCM is set aside, and the second, undamaged PCM is installed in its place. The creator then connects a laptop to the vehicle's OBD-II port to flash the new PCM with the correct tune. Initial attempts to connect and flash the PCM fail. Troubleshooting reveals that the MAP (Manifold Absolute Pressure) sensor is unplugged, which is essential for the engine to run and for the PCM to communicate correctly. After plugging in the MAP sensor, the PCM successfully flashes, and the engine starts.

Goal: Successfully install the new battery and PCM, flash the correct tune, and start the engine.

Tools and materials

  • HP Tuners Interface HP Tuners — Connecting the laptop to the vehicle's OBD-II port for flashing
  • Laptop MacBook — Running HP Tuners software for PCM flashing
  • MAP Sensor General Motors — Monitoring manifold absolute pressure for engine operation
  • P59 PCM — Engine control unit
  • Wrench Set — Removing/installing PCM connectors
  • XS Power D3400 12V Battery XS Power — Providing electrical power to the vehicle

What they say

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do you hear it rattling yeah this one doesn't rattle and there's no holes in it i really hope this one works yeah you know i'm gonna do my best god i'm an idiot okay that is there you see that yeah i see it's like literally like looks like it's like chipped yeah i'd see it i'd like to forget about it and that side's chance yeah basically we just welded a hole into the ecu or i did it because i'm an idiot and in my defense okay this used to have a side post battery in it so this is the old battery you could put stuff on it just fine because the posts were over here now with the new battery it's a regular battery with side post adapters so that means this is not a no bueno workbench anymore because this is extremely volatile um yeah i think it may have actually come with caps for those and i didn't put them on because i'm an idiot as you have already learned i am an idiot but yeah i'm gonna go ahead and throw that other one in there and hope it works did you just smash my nut you smashed my nut busted my nut you got some nut on you wouldn't be the first time man our parents watched these videos well so i've got the old one pulled out here with a little seven millimeter bolts to hold the plugs in those little orange gaskets want to rip out like they want to stick to the computer so pull those off and stick them back in there and uh i found these so i set them on here they don't fit tight but i'm kind of thinking maybe they would have or they used to before these bolts were like melted by my stupid ass so um yeah i'm gonna get this thrown in here and go bother tanner and see if it'll work so we just peed it on none and it cranked so if the computer wasn't good it wouldn't crank shut off the freaking bowling balls yeah they're still i need to take apart the whole like hvac dash stuff and clean it out there's still a bunch of freaking spoil nuts in there yup that just happened what i just held the camera next to my ass when i farted wow that what the time now are you kidding me i hope i don't think it okay so we haven't communicated with the computer yet is there some kind of fuse that could have been something with my cape somewhere out there in the depths of the internet there is a yeehaw sitting at his computer saying just put a carburetor on it we're not going to do that that's how home depot rolls hey that truck is called the carrot now oh my god because he sold it why is it called the carrot okay so i think that was a cable mouse function yeah i think that…

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