05 Impala w/dual temp, have a little heat, 1 heater hose is hot, the other is only slightly warm. Whats the problem?? AC works good

 

<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:PunctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <wontGrowAutofit/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} </style> <![endif]--> Bob1945,

It may be the heater core, just a suggestion, not a diagnosis. I encourage you to take the vehicle in for an inspection. A certified technician will be able to offer a more accurate diagnosis with a physical inspection.

If you have additional questions, please feel free to contact me.

Louis
GM Customer Service

 

Louis,

Thanks for the response. I'll get it checked out.

Bob 1945

 

Did you figure it out? I have a similar issue if not the same & my first diagnosis was the heater core. Do you get ANY heat at all & have you checked ALL your vents & settings (ie face vents, floor vents, & def. vents) I had no idea that my passenger vents were in fact blowing hot air until I had someone look at it & I was the one sitting in the passenger seat. Both hoses are hot but 1 is too hot to grab for more than 2 sec. the other I can grab & hold for much longer. At this point I am convinced that it is the blend door actuator for the drivers side but am unsure how to confirm this. Please let me know what, if anything, you find out.