Chevy & GMC Vans

Okay so I want to know what people think of my dilemma - my Astro's steering seems to be a little loose and sometimes doesn't want to return to centre, sometime is pulls - one minute to the right - next to the left. I've greased up everything down below - nothing looks shot - idlers have a little play but within spec. Its always there, it’s just a little dodgy....

So I am thinking I should do a steering fluid flush, and then check it out. Does any of this sound familiar? Maybe a shot power steering box? Just trying to do everything I can before I go to the extreme and replace tie-rods, idlers, ball joints, get an allignment, and all that - I figure if I am going to get into it - might as well do it all....

sounds like your steering box is shot . time to replace it . if you can find one , a box from an astro RS or a safari GT would be a great find as they are a quicker steering ratio . or even better , throw in a rack like smiliesafari did or Rebels doing now .

My rack is done and was going to say you could have my gear box but after looking where you are and the year, won't work. Sorry

Any body know if these Vans have speed sensitive steering? Maybe I've got a shot sensor...

I found the following quote on another GM repair site....

My guess is that 95 through current models have the steering sensor, but don't know for sure.

If you do have a bad steering sensor and are mechanically inclined you can buy and replace the part yourself. The list price is $59.65 but you can get it for $34 at GMpartsdirect.com. The part is called a Steering Position Sensor and the part number is 26064468. At the dealer I was told it would take about 1 1/2 hours and be like $130+ for labor, plus the $59.65 for the part.

Just thinking out loud - thinking of everything I can

Yes the vans do have steering wheel position sensor. I believe it to be 95 or 96 to the end 05. Sounds to me more like an idler arm issue. These things eat them for beakfast, lunch, and dinner.... Could be wrong though. I put idlers on about every year on my 96. Gotta love TRW cheap with lifetime warranty.

Okay - so took the van out for a little drive last night - and I decided again after looking that the linkages all look okay. So I am going to try the steering fluid flush - I did a little searching on the forum and if anyone can point me to some better direction for performing a flush that would be great. I saw a previous post in which Peter suggested removing the return line

Do a flush. The best way is to keep filling the reservoir while allowing the return pipe from the steering box to dump into a container, all the while turning the wheels left to right while the front tires are mostly off the ground.

But does anyone have any pictures of this? I'll have to pull the crappy chilton/hayes guide I have at home out and see if it has any direction. Not to mention I assume you do this with the wheels up - turning gently - and with the motor NOT started - to avoid nasty pressure....

All right this is happening this weekend - so help with the return line would be appreciated. Otherwise I'll make a stab at it blind... Is it the return line to the box from the pump - or return to the reservoir - I assume the box...

Ya I'd like to know this as well. My fluid is smelling a bit burnt and looking nasty so I wanna flush it to find out if it's due to age or a bad pump.

Okay I jacked it up tonight and thought lets see if I can move the tires easy.... NOPE - does anyone know if I can disconnect the pitman arm and see if everything moves easy? I guess that would narrow it down to the linkages or the steering box wouldn't it? If it moves easy after the pitman arm is disconnected then if has to be the box right?

Alright - Pitman arm is disconnected and the steering wheel is smooth and easy to move side to side. So guess that means I need to go next to the tie-rod and disconnect them - so I can see if one of the ball joints are screwed - I cannot imagine it is anything else in the linkages....

I'll go get the camera to take a photo or two - and by all means please share your thoughts....

You're doing just fine. A systematic elimination of good parts will get you there.

Does anyone have a service manual with the torque specifications for the drag link - that POS Haynes manual I have of course doesn't have any AWD specific information.... while I'm at it how about the tie-rod end - they are up next... at least I can torque them to the same spec as the 2wd and I have a number to at least be in the ball park from the Haynes manual...

I really need to find me a 2001 service manual....

Have you tried tightening your steering box yet?

I've never flushed my power steering unit. I keep reading conflicting information if it really needs it or not. Seems like it would be really easy. I did it once years ago to an 1988 Olds and other than a little messy, it worked perfect. Again, I'm not sure if it really helped anything.

Check the universal joint on the intermediate shaft. Mine was seized and the wheel wouldn't return to centre on its own.