GMC van won't turn right

340doc · 02-24-2008, 10:16 AM

My father in law has a 02 GMC van. It has'ent been used much in the last 6 months and now it is real hard to turn right, like no power assist. Left is not as bad but used to be easier. Are we talking pump or box, how about an additive?

Case 7230 · 02-24-2008, 12:52 PM

Provided the hydraulic pipes are not kinked or damaged, system is not low on fluid and belt is tight then you have sticking valves in the pump or the pump output is poor. You could try an additive which might work if it is sticking valves.

436'd skylark · 02-24-2008, 08:22 PM

your looking at a box problem. the pump supplies pressure regardless of wheel position.

340doc · 02-25-2008, 07:55 PM

Yes everything is good, fluid and belt, I'm kinda leaning toward the box, I agree wouldent the pump work in both directions?

gmctrucks · 02-26-2008, 05:42 AM

Could there be some type of valve that's not working right?

Case 7230 · 02-26-2008, 06:15 AM

Yes Skylark, I think, has made a good point. The pump flow and pressure is the same regardless of which way you turn the wheel. A good chance then you do have a faulty box. Is there a big difference between left and right? Does one way feel like no power at all and needs muscle to turn while the other way turns easily with one hand?

340doc · 02-27-2008, 06:26 PM

It sounds like most of you are leaning toward the box. Yes Case, to turn right it seems like no power steering. You have to go left to turn eaiser.

02-24-2008, 10:16 AM	#1
340doc Full Member Join Date: Jan 2008 Posts: 25	GMC van won't turn right My father in law has a 02 GMC van. It has'ent been used much in the last 6 months and now it is real hard to turn right, like no power assist. Left is not as bad but used to be easier. Are we talking pump or box, how about an additive?

02-24-2008, 08:22 PM	#3
436'd skylark Senior Member Join Date: Mar 2007 Location: Buffalo Ny Posts: 620	your looking at a box problem. the pump supplies pressure regardless of wheel position. __________________ Joe 89 K2500 Chevy, Wee-Oh-five 285K miles, completly rebuilt needs a motor, bad 1962 IHC Scout All Wheel Drive (Scout speak for locking axles) 152 ci, dana everything else

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02-24-2008, 12:52 PM	#2
Case 7230 Senior Member Join Date: Dec 2007 Posts: 250	Provided the hydraulic pipes are not kinked or damaged, system is not low on fluid and belt is tight then you have sticking valves in the pump or the pump output is poor. You could try an additive which might work if it is sticking valves.

02-25-2008, 07:55 PM	#4
340doc Full Member Join Date: Jan 2008 Posts: 25	Yes everything is good, fluid and belt, I'm kinda leaning toward the box, I agree wouldent the pump work in both directions?

02-26-2008, 05:42 AM	#5
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 1,959	Could there be some type of valve that's not working right?

02-26-2008, 06:15 AM	#6
Case 7230 Senior Member Join Date: Dec 2007 Posts: 250	Yes Skylark, I think, has made a good point. The pump flow and pressure is the same regardless of which way you turn the wheel. A good chance then you do have a faulty box. Is there a big difference between left and right? Does one way feel like no power at all and needs muscle to turn while the other way turns easily with one hand?

02-27-2008, 06:26 PM	#7
340doc Full Member Join Date: Jan 2008 Posts: 25	It sounds like most of you are leaning toward the box. Yes Case, to turn right it seems like no power steering. You have to go left to turn eaiser.