2004 GMC Sierra Hybrid Repair Question
Topics covered: Steering, Brakes, Four wheel drive.
Mileage: No information provided.
Mileage: No information provided.
Asked on March 5, 2010
2004 GMC Sierra Hybrid GMC Hybrid Power Steering
Steering problem
2004 GMC Sierra Hybrid V8 Four Wheel Drive Automatic 110000 miles
The Power Steering/Brakes Hydraulic pump is not operating. I have fluid, the pump is not operating and I have 37-40 volts at the plug.
Is ther a control circuit that can be troubleshot or can the pump be checked before I spend 500 bux for a new pump
2004 GMC Sierra Hybrid V8 Four Wheel Drive Automatic 110000 miles
The Power Steering/Brakes Hydraulic pump is not operating. I have fluid, the pump is not operating and I have 37-40 volts at the plug.
Is ther a control circuit that can be troubleshot or can the pump be checked before I spend 500 bux for a new pump
Asked by gdudmanAnswer
Replied on March 6, 2010
Hello gdudman
If you have 37-40 volt at the motor and the pump is not working, check for continuity between the motor and the pump.
if there is continuity, replace the pump.
if there is no continuity, search for an open between the two.
The hydraulic pressure is provided by the pump driven by the electric motor.
Replied on April 21, 2010
I replaced the pump and still no-go. Is there a control circuit or module that controls this
Replied on April 22, 2010
To be more specific I have the following
· Sierra 1500 4WD
· Sierra 2500 4WD
· Sierra 2500HD 4WD
· Sierra 3500 4WD
tell me which one is yours.