Question about 2002 Oldsmobile Silhouette

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1999 Oldsmobile slihouette heat doesn't get hot in the front

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Your heater core is not circulating..this could be because you have air trapped in your coolant system or your heater switch is not opening the valve to allow flow through your core. the front core is located higher than the radiator...so its hard to purge any air that gets trapped in it. personally...I installed a purge valve so I can expel any air from the higher parts of the cooling system....because I also had the same problem with my 2000 premier. but first try to purge your system of any air pockets by turning on your heater.....fan on high......let the vehicle warm up....add some distilled water or dexcool to your coolant tank.....rev engine to 2500rpm for a brief moment.....let idle for a moment and repeat 5 or six times....make sure to turn on the rear heater too at full fan when you do this. if this doesn't help....read up on your vehicle by means of chilton or other published repair manuals ...then check the engine heater switch for proper vacuum and electrical supply when your console control is on for heat (heater switches on the engine - located over each of the valve covers-one for front-one for back-with metallic tubing into side and out of bottom).....be careful...the heater switch on the engine will be very hot!! check relay in fuse box...check fuse in fuse box....check switch and vacuum supply to console control unit.....good luck and be careful....

Posted on Nov 15, 2014

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Posted on Jan 02, 2017

johnjohn2
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SOURCE: read dtc codes 1999 slihouette

buy a code reader at auto parts store or go to an autozone parts store , they will scan it for free,hope this helps.

Posted on Oct 14, 2009

toneman2121
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SOURCE: why my 1999 oldsmobile alero runnig hot after I've gotten it fix

there may be air trapped in the coolant system. the fans may not be connected since you had the radiator replaced. bring it back to the mechanic who did the work and tell him your not satisfied.he should be responsible for the discrepany.

Posted on Apr 23, 2010

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