Cooling Problem after Timing Chain Replacement - Page 2

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Cadillac SRX First Generation Forum - 2004 - 2009 Discussion, Cooling Problem after Timing Chain Replacement in Cadillac SRX / XT5 Forums; In service manual it tells you to use GM's sealant tablets and gives you part number for tabs. When ever ...
  1. #16
    nstar is offline Cadillac Owners Fanatic
    Automobile(s): 99 Eldo ETC 04 SRX V8 AWD 13 XTS
    Join Date
    Jan 2005

    Re: Cooling Problem after Timing Chain Replacement

    In service manual it tells you to use GM's sealant tablets and gives you part number for tabs. When ever the dealer works on cooling system they use them. I Use them the GM brand have not had a problem. I don't use off brand I believe they can give you problems with heater core ,etc.

  2. #17
    glake89's Avatar
    glake89 is online now Cadillac Owners Connoisseur
    Automobile(s): 05 srx awd v6 (gone), '07 GXP, 2010 li'l red wagon 3.6
    Join Date
    Aug 2010

    Re: Cooling Problem after Timing Chain Replacement

    From the OWNERS manual-
    "Notice: If you use the proper coolant, you do not have to add extra inhibitors or additives which claim to improve the system. These can be harmful."
    GM used to use the sealer tablets but I believe they no longer do.
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  3. #18
    the_crowbar is offline Cadillac Owners Member
    Automobile(s): 2005 SRX AWD
    Join Date
    Mar 2009
    SC, USA
    Thread Starter

    Re: Cooling Problem after Timing Chain Replacement

    Wanted to post an update. Prior weekend, I removed the thermostat housing and the lower radiator hose (metal tube at the point it connects to the housing). I did not have the correct gasket and had no vehicle to drive and get another one. I cleaned the existing rubber seal and metal tube (using a kitchen scrubbing pad), coated the channel it sets in with RTV, put the gasket back in and connected everything back up. The thermostat housing seal was new; I simply re-used the one that had been on the car for a week.

    The lower radiator tube definitely had a small leak at the thermostat housing. I am unable to detect a leak now. A clean paper towel run around the thermostat housing and radiator hose comes back clean. The upper radiator hose still feels too soft, but I did not check it prior to replacing the timing chains. It may be that 15 PSI does not make that hose very stiff.

    After quite a bit of driving this weekend, including several trips of 1 - 1.5 hours, the car never ran hot.

    The car idled for about 15 minutes yesterday after 30 mins of driving. Never ran hot.

    It seems the cooling system is working as it should. The temperature has been cooler than normal for June/July (mid 80s versus 90s).

    Unless I see something wrong I do not plan to do anything else with the cooling system.

    Thank you,

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