RPM related whine?

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Cadillac SRX First Generation Forum - 2004 - 2009 Discussion, RPM related whine? in Cadillac SRX Forums; So I am having this issue that I hope the all knowing gurus here can help me out with. My ...
  1. #1
    Ourfreedom is offline Cadillac Owners Member
    Automobile(s): 2004 SRX V8 AWD
    Join Date
    Jan 2013

    RPM related whine?

    So I am having this issue that I hope the all knowing gurus here can help me out with. My 2004 SRX 4.6 AWD is making what sounds like a power steering whine. We also had a lot of oil around the power steering pump. So we replaced the o-ring for the pressure side and replaced the pump. Lets just say that the power steering feels great, doesn't leak and is silent. However the sound has not changed one bit. We were also having an issue with the transmission shifting funny. By funny I mean at low speed it can't seem to make up its mind if it wants to be in 3rd or 4th. Also there is occasionally what I would describe as chatter. If you have ever put a shift kit into your old 3spd auto in an older car to "firm up" the shifts this is what the chatter felt like. Kinda like it would shift 3 or 4 times in rapid succession, each with a fairly hard hit. I am wondering if all of these could be related to the pump or torque convertor. We just made a trip from Seattle to Memphis and it made it ok but I am concerned about our upcoming trip to Texas. Should I just take this to a tranny shop or is there something I can do without dropping the tranny myself? By the way, this thing has 107000ish miles and the trans fluid monitor says I have about 40% life left. Thanks in advance for any help you can offer!

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  3. #2
    Sheepish is offline Cadillac Owners Fanatic
    Automobile(s): 2004 Cadillac SRX V8 AWD
    Join Date
    Aug 2012
    Kalamazoo, MI

    Re: RPM related whine?

    If it were me I'd swap the tranny fluid. The dealership said wait until I hit around 30% and a friend who works as a shop super in a GM dealership said between 30-50%. Have you had it since new?

  4. #3
    glake89's Avatar
    glake89 is online now Cadillac Owners Connoisseur
    Automobile(s): 05 srx awd v6, 07 Solstice GXP
    Join Date
    Aug 2010

    Re: RPM related whine?

    Get an auto stethoscope and find out what is whining, not likely the transmission. For that, get a flush, most dealers are not way overpriced.
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  5. #4
    08SRX's Avatar
    08SRX is offline Cadillac Owners Enthusiast
    Automobile(s): 2008 SRX Sport Pkg
    Join Date
    Jun 2011

    Re: RPM related whine?

    On the first issue: make sure there is enough power steering fluid in the system. If it doesn't leak, it will still whine when it is low. Also, power steering will often stop whining when it warms up and is worst when the vehicle is cold. It could also be one of the pulleys along the accessory belt (e.g. power steering pulley or idler pulley), as their bearings can wear.

    On the second issue: I agree, have the transmission oil replaced first. Especially if it has not been done before.

  6. #5
    nstar is offline Cadillac Owners Fanatic
    Automobile(s): 99 Eldo ETC 04 SRX V8 AWD 13 XTS
    Join Date
    Jan 2005

    Re: RPM related whine?

    I had this problem at 29000 mil 04 v8 it was the torque converter in 04 there was manufacturing problem with converter causing whine and tach would fluctuate, There is tsb on problem.

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