Michael_Taylor___
Bone Stock
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| 05/07/2002 2:13 PM |
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| I'm in the process of buying a 1999 Chevy Suburban with 87k miles on it. The steering slips at about 45º off center at all speeds. It's pretty wild going down the freeway at 75mph on a bridge with a turn and it slips. Scared the hell out of me. I was wondering if it was an inherant problem. Thanks. |
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Carl___
Bone Stock
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| 05/07/2002 5:02 PM |
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| what do you mean by slips? is there slop in the steering wheel? does the power steering work then stop working? is it classic or new body style? i could give you a possible diagnosis if you explain the "slip" better. |
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Michael_Taylor___
Bone Stock
Posts:0
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| 05/08/2002 9:31 AM |
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The power steering works all the way through. It's as if there was a notch on the column that when turned at about 45º contacts with something in the steering sleeve. Once it gets past that point, it momentarily "slips". Like as if it was turning normally then really easy then normal again. |
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Travis_C.___
Bone Stock
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| 05/08/2002 6:35 PM |
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I had a 97' chevy Silverado Pick-up Truck 1500. I had several near misses with vehicles as it was doing the exact same as your vehicle - I called it "christine" - I finally found a dealer that fixed the problem - A steering Sensor was causing all the problem! - good luck!
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Michael Taylor at 5/7/2002 2:13:09 PM
I'm in the process of buying a 1999 Chevy Suburban with 87k miles on it. The steering slips at about 45º off center at all speeds. It's pretty wild going down the freeway at 75mph on a bridge with a turn and it slips. Scared the hell out of me. I was wondering if it was an inherant problem. Thanks. |
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unknown___
Bone Stock
Posts:0
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| 05/13/2002 6:35 PM |
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ok, i think i understand your problem now. i agree with travis, it's most likely a power steering sensor. your truck has EVO (electronic variable orrifice) steering. this varies the amount of assist you have at different speeds. your steering sensor is probably sending too much assist to you at higher speeds making your steering too easy. hope this helped. |
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JoeSniper
Bone Stock
Posts:3
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| 02/24/2007 10:21 AM |
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| I have the exact same PU, a 97' Chevy Silverado 1500 and my steering does the same "slip" thing, but at any speed, even parked. If I hold it about to the right it sometimes (nearly always now) slips to real easy. I need to fix it. Still sound like the EVO? can I just pick a used one up at the junk yard and put it in? This must be a genetic flaw with this truck type.
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 02/24/2007 10:51 AM |
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Hi Joe - given that these trucks were plagued with this problem, I certainly wouldn't pick up a sensor from a junk yard, as you might end up paying for yet another faulty sensor!
Given the criticality and the need for safety with steering systems, I would absolutely get a new sensor from the dealership.
Regards,
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
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'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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JoeSniper
Bone Stock
Posts:3
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| 02/26/2007 8:16 PM |
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Thanks Rick! I am to assume you figure that this is my situation too. Thank you. How would I order such an item? In other words what is it called and do you have an idea of cost? My truck has 121,000 miles on it. Thanks again! Joe
quote:
Originally posted by webby4x4
Hi Joe - given that these trucks were plagued with this problem, I certainly wouldn't pick up a sensor from a junk yard, as you might end up paying for yet another faulty sensor!
Given the criticality and the need for safety with steering systems, I would absolutely get a new sensor from the dealership.
Regards,
Rick
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 02/26/2007 9:50 PM |
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Hi Joe - I'm pretty sure it's called an EVO sensor, and you can order one at your local Chevrolet dealer. If you can get them to tell you a part #, you can then also call around to NAPA and a few other specialty parts stores and see what their price is. They can cross-reference the OE part # wiht their #'s and get you price and availability.
Hey SnoMan - you're the Chevy expert... any idea on what the part # or name of that part is?
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
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'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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SnoMan
Lift & Lockers
Posts:943
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| 02/27/2007 5:11 AM |
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| You are a bit confused, the EVO is not a sensor (Electronic Variable Orifice) it is used to restrict flow of fluid when less boost is needed to maintain road feel and reduce steering boost at speed to better stability due to more effort needed to turn wheel making it less twitchy. It cannot cause play but with boost gone or reduce you will feel sector gear play more because there is a valve in input to box that senses motion and direct flow to boost unit which acts directly on output shaft bypassing sector/worm combo. When boost is gone you will feel this slop/wear a lot more and if there is that much play when EVO is bad it is time to either think about adjusting box (there are two adjustments not one) or replacing it. Adjustment is a bit tricky and should not be done unless you really know what you are doing. (especaily the main input preload that requires a specail tool to do it properly.) |
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Visit the SnoMan at
www.thesnoman.com |
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JoeSniper
Bone Stock
Posts:3
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| 02/28/2007 2:36 PM |
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| Thanks guys. I spoke to a mechanic where I picked up some tires and he advised me that it probably isn't the sensor and he thought it was the steering box, a pump or something like that within the steering box. I forgot to tell you that it only occurs when I am turning in one direction... right. Weird perhaps... sorry, does that matter? Joe |
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SnoMan
Lift & Lockers
Posts:943
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| 02/28/2007 5:14 PM |
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quote:
Originally posted by JoeSniper
I forgot to tell you that it only occurs when I am turning in one direction... right. Weird perhaps... sorry, does that matter? Joe
It matters a lot as this shows that it is about a 99.9 percent chance of it being the steering box. |
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Visit the SnoMan at
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foxychell
Bone Stock
Posts:1
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| 08/24/2010 10:33 PM |
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| Hi need some help on my steering problem also with same slip movement in my steering wheel as driving ..I did get a new tires , a steering box, also idle arms they claimed and Alignment also which still has NOT fixed my problem with steering loose and slips to the right now as driving .it use to slip to the left but now that i got an alignment it goes to the right now any ideas for me ..I read up above about some sensor boy will i be a hot putting all this in my car and not fixing my problem |
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jeff schauer
Bone Stock
Posts:3
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| 02/23/2011 11:14 AM |
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Same problem with the steering slippage. To describe it: its like at certain angles during turning, right or left, slow or fast, at different wheel angles, it feels like you hit a little ice patch and the steering wheel resistance suddenly decreases, whereupon the driver tries to compensate and the vehicle does a related jerk due to the driver "catching" the loose motion of the steering wheel. My 99 suburban has 260,000 (2nd engine @ 200,000) miles. Problem is worsening with time. Gonna start with checking ball joints and tie rod ends. Gear box next. Then the OCV sensor. Gotta get 500,000 on this truck so i can say i drove it to the moon...... and back.  |
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jeff schauer
Bone Stock
Posts:3
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| 02/23/2011 11:21 AM |
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Oops, EVO... not OCV.....  |
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pgolfer
Bone Stock
Posts:1
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| 01/30/2012 10:09 AM |
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Hello All. Has anyone been successful in fixing the "slip/slop" on their GMC Suburban?
Would appreciate any feedbacks.
One thing I missed was the severity of the problem...Is it dangerous and can potentially lead into an accident?
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 01/30/2012 6:44 PM |
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He PGolfer - yeah, it's pretty critical that you get this fixed. I'm a bit cautious when it comes to brakes and steering, and always play it on the safe side. I'd get it into a dealer asap.
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
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'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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