Steering Stiff Looses Power Assist

[djdave33]

Is there any fix for the hard steering lack of assist in the 2500hd/3500 trucks steering problems? My truck looses power assist at slow parking lot type manuvers and also when its stopped when trying to turn the steering wheel. It turns for a little bit then gets real hard to turn and the pump growls and hisses likes its low on fluid. What a bad design flaw that gm is using. I have a 2005 3500duramax/allison cc drw 4x4.. any help or info would be greatly appreciated

[jrrod2004]

Here is the information that I found:

 

 

 

 

Document ID# 1851917

2005 Chevrolet Chevy K Silverado - 4WD

Subject:Lack of Steering Assist or Shudder During Parking Lot Type Manuevers - keywords bind booster hard hydraulic noise #PIT3386D - (07/31/2006)

 

 

Models:2002-2006 Cadillac Escalade Models

 

 

2000-2006 Chevrolet Avalanche, Tahoe, Suburban

 

 

1999-2007 Chevrolet Silverado Classic

 

 

1999-2007 GMC Sierra Classic

 

 

2000-2006 GMC Yukon Models

 

 

2003-2007 Hummer H2

 

 

This PI is being updated to add fix information and models. Please discard PIT3386C.

 

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

 

Condition/Concern:

Some customers may comment on a lack of steering assist when stopped or during parking lot type maneuvers.

 

Recommendation/Instructions:

Please follow normal diagnostics in SI for this condition. If the vehicle passes the Power Steering Pressure Test Procedure in SI this may be a normal condition. A lack of steering assist could occur if the brakes are applied and turning the steering wheel with the vehicle stopped or during parking lot type maneuvers. This concern can be aggravated by worn tires, low tire air pressure, low power steering pump pressures, and tires larger than stock size. In some cases, where the power steering pump pressures are at the low end of the specification, replacing the power steering flow control valve with P/N 26095470 may improve the concern. On 1500 models with the 670 gear please following Bulletin 05-02-32-008A, which may increase customer satisfaction.

 

No further repairs should be attempted as this is a characteristic of the vehicle. Any customer concerns should be referred to the Area Vehicle Manager (AVM) and a Field Product Report should be submitted by following bulletin 02-00-89-002D. When submitting the Field Product Report please advise if the vehicle is equipped with anything other than the stock wheel and tire size, example GM SPO 20 inch Wheels and Tires.

 

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

 

 

 

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

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Document ID# 1851917

2005 Chevrolet Chevy K Silverado - 4WD

[jrrod2004]

which means that if it is within spec, it is normal, if not, flow control valve may need replacement.

[djdave33]

which means that if it is within spec, it is normal, if not, flow control valve may need replacement.

 

 

Thanks,

I allready had the tsb for the truck. I dont think having to use both arms and fight with the steering wheel is normal thou. I had a new flow valve installed in the power steering pump that made the concern worse. They then tried a new steering gear assembly and that too had little if no improvement. Mine seems to get worse the longer/hotter the fluid gets meaning the more I drive it or on hot ambient temps.

 

Thanks again,

Dave