Question about 2004 Pontiac Grand Prix
The diagnosis of this kind of problem is made reading codes with a Tech 2 GM Diagnostic Scan Tool. If they did code reading the first time, even before doing the job at a generic garage, then you would not have wasted money in wrong part and time.
If they said that EBCM must be replaced, then code returned was U1040, which means: Loss of Communications with EBCM
Before replacing the the electronic brake control module (EBCM), check connector and wiring to module. Ask the dealer if they did code reading, and ask if the EBCM replacement choice was determined by codes.
Posted on Sep 15, 2010
Were i the sensor under the pump ,i have the send problem,i am salvador.
Posted on Sep 29, 2015
I have no idea what they are trying to replace. This is a common problem on this model.
The problem is likely the pump but there is a sensor that adjusts the pressure that the pump supplies to the steering gear and that could also be the problem. The use of a Tech II scan tool should be able to tell if the pump is putting out pressure and if it is not the pump is bad. The Tech II is a tool that most any dealer would have and some independent garages may also. These have a high failure fate of the pump shaft and if you remove the belt and pull the pulley on the power steering it may pull right out if it does the pump needs to be replaced.
If the power steering pressure sensor does not detect pressure it would likely to that light on, or the problem could also be the sensor itself (this is not a common problem).
Let me know,if needed further assistance.
Hope i helped you.
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Posted on Sep 16, 2010
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Posted on Jan 02, 2017
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