Truck Whisperer- What do they do??

Sounds like a good old fashioned motor mechanic to me.

My Brother in law was one and he could diagnose any problem just by listening and having a test drive.

Didn't need all the test gear. He worked for the RACV and the young fellas called on him whenever they couldn't figure something out.

what happened to putting the end of a large screwdriver on the engine and the other end on your earhole.
now they just plug a diagnostic machine in and think it can tell them all the answers.
otherwise, rather than take it to your dealer to diagnose problems, just go round to the local pub about 6pm, open the bonnet, and the lads will be around it and have the problem solved in 5 minutes.
if they don't, you can always join them.

Got mine done a few years back, for free as a demo. They reckon they could fix the problem of the front left tyre outer edge scrubbing. Well, they didn't! Load of hoo-hah. I went right over the front end and not a bit of dirt or gunk disturbed of a bolt or nut anywhere. I do think they might have balance the front wheels whilst on the hubs - that way everything is in balance but as soon as you rotate your wheels or even change a flat the benefit is out the window. I think it is more a case of all in the mind with this whispering bullsh1t!

Only seems to work with Broncos.
You could try it yourself.
1. Start under the bonnet and snort gently into the top of the carby.
2. Run your hands seductively down each side of the bodywork at the same time talking in a gentle tone (note: not the usual talk eg "Stop again on me yer mongrel and you're on yer way to the knackers yard!").
3. Kiss the bonnet above the radiator while holding the driving lights in each hand (if fitted).
4. Top up the oil, bit more pressure in the tyres, quiet rubdown with a chammy.
4. Starting with light weights, gradually increasing the luggage up on the roofrack.
5. Open the drivers door and caress the seat - don't get in at this stage - it may frighten it.
6. Do No.5 for a couple of hours then slowly ease yourself onto the seat and put on your seatbelt as fast as you can without spooking the beast.
7. If there is no violent reaction, start her up and sit quietly for a few minutes, while talking gently.
8. Engage drive and stay in 4L for a few rounds of the block.
9. After a few days of No.8 you should be able to move out of the paddock with confidence.
10. The side effect of this may be that the vehicle wants to follow you around everywhere - get used to it.

cheers
Terrence Ribbands

His methods are a secret but his results are nothing short of amazing, from what I have seen...

The company I do casual work for had a T604 which was all over the place, KW were unable to find/fix the problem and the truck whisperer was called in. When finished it was the smoothest, best handling tug in the fleet...

I don't know what it cost or what he did but I'm pretty sure I'm lucky I wasn't footing the bill...lol

Does it work on computers?

SShhhhhh hush. they bend the friggin' axle so it suits Aussie Roads, good one for F250s