[Rodeo_Joe]

I have the parking pin in my truck grind like I as still movin' while I put it into park but yet I'm stopped with foot on the brake. Why? how hard to fix this?

2003 2500HD stock 5 speed

 

[Machinator]

Well, if it's grinding it's because the P3 carrier is still moving somehow. Does it do it going from Reverse to Park, Neutral to Park, Drive to Park, or all three? Are you in 4WD-low?

 

[Rodeo_Joe]

it only does it while in 4 low..... an its basically any gear into park

 

[Puffer]

The transmission is supposed to be in neutral when shifting into four wheel low. So perhaps you should put it in two wheel high or four wheel high before you put it in park.

 

[Rodeo_Joe]

so you tellin' me I can't put my tranny into park while my transfer case is in 4 low???? All other trucks I've had this wouldn't matter. anyone else have this problem?

 

[Rodeo_Joe]

any ideas as to why????? please help!

 

[SNOWBLIND]

grinding

I have that grinding on my new 6-speed going from drive to park even when in 2wd. my old one would do it in 4low, but the manual wants you out of 4lo for park

 

[Machinator]

The 4WD-low explains it. Remember that the T-case reduces the gearing in 4WD-low (2.73:1) such that the transmission output has to spin 2.73 times to spin the T-case output once. So that means if you any forward movement (even if it seems you're at a near stop) the trans output is going to be spinning quite a bit faster. As a result, it grinds when you put it in park.

I believe the owners manual recommends not putting the transmission in Park when in 4WD-low, it should only be done in 2WD or 4WD-high.

 

[Rodeo_Joe]

ok thanks y'all... I'll remember that!