GMT800 Power Steering Pump

[daddy]

Question:
Why are there different pumps for 2wd and 4wd?

I'm sure that 4wd is harder to move because of the added resistance of the 4wd components.

I'm guessing it's due to the fact that 2wd has rack and pinion steering, while 4wd still has the old recirculating ball steering box.

THAT, i didnt know. thought they were all converted to rack and pinion

I read that they stuck with the old style because the rack & pinion wasn't strong enough.

When did GM get away from using torsion bars on 2wd? They're still used on 4wd right?

Not on the 900's, no.

 

[daddy]

The pump itself should be the same.

The only differences should be between having hydroboost and not having it.
And apparently the hybrids get a slightly different one as well... Other than those two things, though, they should be the same.

So, exactly the same, only different?

 

[drperry]

The pump itself should be the same.

The only differences should be between having hydroboost and not having it.
And apparently the hybrids get a slightly different one as well... Other than those two things, though, they should be the same.

So, exactly the same, only different?

I just woke up... Shut it

 

[daddy]

 

[DV2000NJ]

Question:
Why are there different pumps for 2wd and 4wd?

I'm sure that 4wd is harder to move because of the added resistance of the 4wd components.

I'm guessing it's due to the fact that 2wd has rack and pinion steering, while 4wd still has the old recirculating ball steering box.

THAT, i didnt know. thought they were all converted to rack and pinion

I read that they stuck with the old style because the rack & pinion wasn't strong enough.

That comment was in regard to GMT800 trucks. The GMT900s all have struts and rack and pinion steering (half ton, anyway), but on the GMT800 trucks all 4wd models had the recirculating ball steering box style, I believe it was because of clearance, since the frame wasn't designed to fit the 4wd components with a steering rack, but I could be way off on that.

When did GM get away from using torsion bars on 2wd? They're still used on 4wd right?

The only trucks that GM currently uses torsion bars on that I am aware of are the HD trucks.

They were never widely used on 2wd trucks. I know the 2wd SS, the VHO, and some (possibly all) 2wd crew cab GMT800s had torsion bars. There are also some oddball trucks I've seen that have them, for no obvious reason.

 

[PenguinLTZ]

This ending your lesson in steering and suspension

Honestly I thought every GM guy by now knew that the 900 halfies has done away withe torsion bars.

 

[daddy]

Fucking AFM. Could have kept the damn torsion bars if it weren't for you meddling cylinders!!!

 

[Z71 Kris]

 

[drperry]

Question:
Why are there different pumps for 2wd and 4wd?

I'm sure that 4wd is harder to move because of the added resistance of the 4wd components.

I'm guessing it's due to the fact that 2wd has rack and pinion steering, while 4wd still has the old recirculating ball steering box.

THAT, i didnt know. thought they were all converted to rack and pinion

I read that they stuck with the old style because the rack & pinion wasn't strong enough.

That comment was in regard to GMT800 trucks. The GMT900s all have struts and rack and pinion steering (half ton, anyway), but on the GMT800 trucks all 4wd models had the recirculating ball steering box style, I believe it was because of clearance, since the frame wasn't designed to fit the 4wd components with a steering rack, but I could be way off on that.

When did GM get away from using torsion bars on 2wd? They're still used on 4wd right?

The only trucks that GM currently uses torsion bars on that I am aware of are the HD trucks.

They were never widely used on 2wd trucks. I know the 2wd SS, the VHO, and some (possibly all) 2wd crew cab GMT800s had torsion bars. There are also some oddball trucks I've seen that have them, for no obvious reason.

All 4x4 GMT-355s and all V8 GMT-355s are tortion bar