Parking brake fail? Wet, not icy surface

[Heliian]

It is possible the parking pawl is broken and you weren't putting the brake on.

parked my son’s truck in the usual spot

came into the garage and guided me to park again

Are you parking on an icy hill still?

It will take all of less than 5 minutes to test your truck parking systems.

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[TMND]

Happened in his garage as well ?‍

I’m assuming that floor was fairly level and dry

 

[TMND]

?‍You are correct sir. I had to reread the original post. I could’ve swore i read him say something about being pinned against the wall in the garage. Now that has me wondering if he was reversing into the parking spot like the video of the other guy sliding down the hill?? may be having your “anchor” tires on the downhill side would be better. Due to lack of reply from the OP we may never know.

 

[jefrank]

Did the truck slide, or roll?

Pushing the brake pedal would apply the brakes at all four wheels, the e-brake would only be two so it would be good to know if it slid or rolled since the e-brake is a solid mechanic brake, that and the parking awl should have engaged locking the rear drive motor

I can't be 100% sure if all 4 wheels slid or if 2 were turning - back 2 definitely slid based on the tracks in the snow on the drive. I just know that applying the physical brake stopped incident 2 immediately.

 

[RocketGhost]

My guess is that nothing on the truck failed, the rear wheels were locked. The front wheel are not locked by being in park with the parking brake - only the rear wheels. The rear tires lost traction on the snow/ice and the truck slid with the rear wheels not turning. This has happened before.

 

[jefrank]

My guess is that nothing on the truck failed, the rear wheels were locked. The front wheel are not locked by being in park with the parking brake - only the rear wheels. The rear tires lost traction on the snow/ice and the truck slid with the rear wheels not turning. This has happened before.

Seems like a questionable design to double-lock the back wheels (awl plus parking brake) with nothing locking the front, but, hey, I'm a software guy, not a mechanical engineer.

 

[jefrank]

The way most vehicles have done it. Well, at least before FWD being commonplace, but this is the way trucks have worked since, well, forever iirc.. The parking brake isn't an extra brake, it's a stronger system than the metal tab/pin that is the parking awl.

So it's tradition and we all know that tradition is never wrong

 

[Runaway Tractor]

I don't understand the mental gymnastics people are subjecting themselves to here. Oh no the parking brake won't hold the truck on a solid sheet of ice!! No crap. The parking also will not let the truck swim, and also won't cook you breakfast. This is not a limitation or flaw in the vehicle. This is what happens on ice. To everyone and everything.

 

[Joe.....Montana]

I don't understand the mental gymnastics people are subjecting themselves to here. Oh no the parking brake won't hold the truck on a solid sheet of ice!! No crap. The parking also will not let the truck swim, and also won't cook you breakfast. This is not a limitation or flaw in the vehicle. This is what happens on ice. To everyone and everything.

Are you sure.....

 

[jefrank]

I don't understand the mental gymnastics people are subjecting themselves to here. Oh no the parking brake won't hold the truck on a solid sheet of ice!! No crap. The parking also will not let the truck swim, and also won't cook you breakfast. This is not a limitation or flaw in the vehicle. This is what happens on ice. To everyone and everything.

Wasn't a sheet of ice in my case, was just snow. Unfortunately, the snow was wet enough to compact down but thick enough not to get me to pavement.

 

[jefrank]

Doesn't mean it IS wrong however...

I know, I was just trying to be funny

 

[TMND]

The “mental gymnastics” you’re referring to here is kind of a moot point. This wasn’t a thread about a truck sliding down the hill, although thats likely what happened. This was about the OP believing there was a mechanical failure. Allowing it to keyword here, Roll.

 

[Runaway Tractor]

Are you sure.....

Yes. A video showing a truck sliding on ice seems to illustrate my point rather than negate it.

 

[Runaway Tractor]

Seems like a questionable design to double-lock the back wheels (awl plus parking brake) with nothing locking the front, but, hey, I'm a software guy, not a mechanical engineer.

You probably just don't realize it if you never needed to think about it. But this is what putting any 2wd or 4wd-in-2wd automatic transmission vehicle in park does. There is nothing different about the lightning vs any other pickup truck and most cars.

 

[Joe.....Montana]

Yes. A video showing a truck sliding on ice seems to illustrate my point rather than negate it.

Sorry....I should have put (Sarcasm)...afterwards...rawr...

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