GM: Electronic Power Steering Gear Leaks

GM Tech Tip: Electronic Power Steering Gear Leaks

On GM vehicles with electric power steering starting in 2009, you may see grease or sealant on certain locations of the steering gear.

CONDITION: 

On GM vehicles with electric power steering starting in 2009, you may see grease or sealant on certain locations of the steering gear. Electric power steering systems do not have fluid inside of them.

CAUSE: 

During the manufacturing process, sufficient grease is used for lubrication and sealing of the steering gear components. Also, a sealant is added to areas of the steering gear to keep water and environmental contaminants from getting inside. 

Image 1

The arrows in images 1 and 2 show examples of some of the common areas where grease may be evident after the vehicle has been driven for a length of time.

Image 2

REMEDY: 

If oil is observed dripping off of them, look above or around the component for an oil leak. Upon inspection, if the steering gear assembly clamps, boots and fasteners are all in place, the visual evidence of grease/sealant on the exterior of the steering gear is considered normal, and no correction is necessary. If excess grease is noted, it should be wiped off of the gear. However, the sealant should be left in place as a barrier to water and contamination, and no cleaning is required.

You May Also Like

Ride Control For Electric Vehicles

Replacement units are available from sources other than the dealer.

EVs are not immune to potholes, curbs and rough roads. Just like every internal combustion vehicle on the roads, the shocks, struts and springs will eventually degrade to the point where they can no longer control the movement of the suspension. 

Most EVs have a weight problem that works to your advantage. The weight of the battery and motor can make some EVs 1,000-3,000 pounds heavier than their internal combustion counterparts. This will cause extra stress on the suspension.

Brake Pad Edge Codes

The “Edge Code” can tell you information about a brake pad’s friction material.

Chassis Parts and Alignment Angles

Knowing why the adjustment is required is critical to performing the total alignment.

Suspension Upgrades – Selling Shocks and Struts

The question customers fail to ask is, what is “best” for their vehicle?

Air Ride Suspension Diagnostics

The key to understanding the logic of air ride systems is using service information.

Other Posts

Hydraulic Power Steering Service Opportunities

Hydraulic power steering is still the choice for some platforms and applications.

Power Steering Pull

Every driver has a different threshold for a pull.

Steering Angle Sensor Operations

It is important for the ABS/ESC module to receive two signals to verify the steering wheel’s position.

Chassis Alignment

The source of the complaint can be the angles, electronics or tires.