LC GPT: make the robots work for you (2 Viewers)

[Dziobak]

After coming across another thread asking about FSM's, I wondered if it'd be useful to have a custom GPT trained off of the documentation. I quickly put two of them together that are based on slightly different datasets.

If you wanted to give 'em a spin, I'd love any feedback on how to improve either one.

100 Series GPT Using: Github for 100's, Ih8mud 100-series forum​

LC GPT 2.0 Using: Github for 100's, FSM PDF's, Ih8mud's series-specific forums​

ih8mud GPT Using: Ih8mud's series-specific forums​

I'll play around with these a bit more to improve things like knowledge bases, instructions and clarifications, and how answers are sourced and cited.

 

[Red Beard]

What kind of questions can I ask it? I'm assuming it can tell me where certain procedures are.

 

[Dziobak]

I'll see how far I can push it later today but it's done a pretty decent job for queries like:
-- What do I do about a VSC/off light?
-- How do I change my sparkplugs?
-- There's water under the glovebox.

 

[smcg3]

I just discovered this thread (neat idea BTW!) and the moment I launched the GPT, I started cracking up. The first two default questions are just.... *chef's kiss* perfect for this forum.

 

[crimsonaudio]

This is genius, just asked the 100 series GPT a few questions it works great! Thank you!

 

[excessive]

This is extremly cool . i tested it out and asked a few random troubleshooting questions, and the answers were spot on. I also asked it for some random torque specs , and it seemed right on and very quick to answer.

 

[Moridinbg]

As always with ChatGPT, having at least some knowledge about the topic is essential to weed out the bull**** and LLM hallucinations.
You have to pretty much already know what you want to know to see through the confident bull****.

How do you bleed the AHC on a LHD 100 series?

Using 100 Series GPT

The AHC system has bleeder valves located near each strut (suspension component).

• Loosen the bleeder valve slightly using a wrench and watch for fluid to come out.
• While the fluid flows, have an assistant raise and lower the AHC system to help purge air from the lines.

Not a word about the vehicle dropping in height when loosening the bleed valve which is super important and potentially dangerous.

LC GPT 2.0 had the least detailed response, including gems such as

Use a vacuum pump or Toyota diagnostic tool to pressurize the system and remove air from the hydraulic fluid.

Otherwise it spit out generic bleeding instructions, which could just as well have been about brakes.

ih8mud GPT had the most detailed response. Also the most wrong

• Engage the parking brake and make sure the vehicle is secure.
• Raise the vehicle with a jack and support it with jack stands if necessary, especially if you need access to suspension components.

Again with the assistant cycling the system while the bleed valve is opened

• Have an assistant sit inside the vehicle and turn the ignition to "ON" (engine running is typically required for AHC operation).
• Cycle the AHC through its height settings (Lo, Normal, Hi) to help push the air out of the system.
• As the system cycles, fluid will be pushed through the lines. Continue bleeding until no air bubbles are visible in the clear tubing.

Another attempt with the needle bearing

How do I remove the front knuckle needle bearing?

Using 100 Series GPT

• No mention of the hub flange nuts
• Instructs me to remove the axle shaft nut and then the CV snap ring
• Instructs me to then extract the needle bearing, mistaking it for a wheel bearing.
• No mention of the CV axle, disconnecting the ball joints, etc, etc

LC GPT 2.0 again had the shortest answer, like 20 lines. Very vague.
ih8mud GPT was similar to 100 Series GPT, slightly more detailed. Just as incorrect.

Final attempt with the ih8mud GPT and getting much more detailed

I was asking about the spindle needle bearing that is on the back of the steering knuckle, behind the brass bushing.

• Remove the brake caliper, rotor, and hub to gain access to the steering knuckle and spindle.
• Remove the axle shaft by disconnecting any related components like the tie rod end and upper/lower ball joints to free up the knuckle.
• The needle bearing is behind the brass bushing on the inside of the steering knuckle.

We are getting somewhere, but this is very vague.

can you be more precise in how do I remove the knuckle?

• Remove the brake caliper
• Slide the brake rotor off the hub. If it’s stuck due to rust, gently tap around the rotor with a mallet. - this is not how it works at all! Removing the front rotor is way more work.
• Pry off the hub cap.
• Using a large socket (usually 35mm or 36mm), remove the axle nut securing the CV axle to the hub. A breaker bar may be necessary due to the high torque.

Further down it is the same mix of somewhat right and mostly wrong.

Tried some other random stuff, such as looking for the BD1 cable connector - told me it is in the engine bay.
Make of this what you will.

 

[Berkut10r]

Love it!

 

[Manhattan]

Kinda cool. But, I wonder when ChatGPT beats Google, i.e., what type of question favors each tool?

Example: I asked each the second most common question in the history of the 100 Series Land Cruiser: "What's the thing on my 2006 Land Cruiser frame?"
Google nailed it with just that (vague) input or "prompt."

ChatGPT needed some prompt refining...

 

[Live to Ski]

once (if) there is confidence is mudchat, will there be a dedicated button (access) on mud?

 

[Super77]

After coming across another thread asking about FSM's, I wondered if it'd be useful to have a custom GPT trained off of the documentation. I quickly put two of them together that are based on slightly different datasets.

If you wanted to give 'em a spin, I'd love any feedback on how to improve either one.

​

100 Series GPT Using: Github for 100's, Ih8mud 100-series forum​

​

LC GPT 2.0 Using: Github for 100's, FSM PDF's, Ih8mud's series-specific forums​

​

ih8mud GPT Using: Ih8mud's series-specific forums​

I'll play around with these a bit more to improve things like knowledge bases, instructions and clarifications, and how answers are sourced and cited.

This is great thinking. I’ve started a post on the same topic, feels like AI is an underutilized resource here.

I tried LC GPT 2.0 linked above and asked:

I asked bone-stock ChatGPT 4o the same:

…it goes on and on down the page and offers to compile a printout with gasket part numbers, fluid specs, etc.

So I don’t think it’s even necessary to train a GPT for general knowledge stuff. Mine has already figured out I have a 99 LC and its default assumption seems to be that I’m asking a question about the vehicle.

I’d still like a way to ground to the FSM, though. That’s a far more accurate source of truth for when you have to be absolutely sure.