93 Suburban Rear Heat Not Working Only Cold Air

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93 Suburban Rear Heat Not Working Only Cold Air - 10/26/2007 3:47:34 PM    1981camaroz28 Posts: 11 Joined: 10/26/2007 From: South Philly Status: offline For some reason my Suburban's rear heat is not working the AC will work but when I put heat the air only changes slightly. Any help would be great. I have the 350 engine if that helps. < Message edited by 1981camaroz28 -- 10/26/2007 3:54:32 PM > _____________________________ I have a 93 Suburban, 81 Camaro Z28 and Mint 70 Pontiac Gran Prix. Always Looking for Advice about my Camaro. Post #: 1

RE: 93 Suburban Rear Heat Not Working Only Cold Air - 10/26/2007 5:01:33 PM    1981camaroz28 Posts: 11 Joined: 10/26/2007 From: South Philly Status: offline I see many people have this problem with Suburban it worked great one day than the next cold. Anyone who says the rear heat is far away from the front so it gets cold is a idiot. There is something else wrong. I saw other people with a battery issue I might try to disconect the battery overnight and reset the computer.  (in reply to 1981camaroz28) Post #: 2

RE: 93 Suburban Rear Heat Not Working Only Cold Air - 10/26/2007 5:39:15 PM    lost_in_alabama   Posts: 72 Joined: 7/17/2006 Status: offline Are you sure you have rear heat?  I had a 94 that had rear A/C but not rear heat. (in reply to 1981camaroz28) Post #: 3

RE: 93 Suburban Rear Heat Not Working Only Cold Air - 10/26/2007 6:30:44 PM    1981camaroz28 Posts: 11 Joined: 10/26/2007 From: South Philly Status: offline I had the truck 9 years and the heat was so hot in the back  my kids would tell me shut it off after 2 minutes. It sounds like the door inside that switches the heat and cool air might not be moving all the way shut. Not sure if the computer controls that or not < Message edited by 1981camaroz28 -- 10/26/2007 11:15:16 PM > (in reply to lost_in_alabama) Post #: 4

RE: 93 Suburban Rear Heat Not Working Only Cold Air - 10/27/2007 10:40:16 AM    MalibuMaxxSS Posts: 598 Joined: 11/18/2006 Status: offline I think they use a seperate filter, check to see if its plugged, but that wouldnt make sense either if its blowing cold, never mind........next...does the front still blow hot? _____________________________ 2006 Malibu Maxx SS, computer Flashed, undercar LED, Cold air intake, 18' Potenzas, Limo tint front to back 1990 YJ Lifted Locked and always muddy, posi loc, 33s TSLs, weber carb. drop tailgate... (in reply to 1981camaroz28) Post #: 5

RE: 93 Suburban Rear Heat Not Working Only Cold Air - 10/27/2007 10:49:39 AM    1981camaroz28 Posts: 11 Joined: 10/26/2007 From: South Philly Status: offline I can cook a steak in the front it's that hot. I have to shut it off after 2 minutes. When I put the heat on in the back the temp does change a little bit not much maybe 5 degrees < Message edited by 1981camaroz28 -- 10/27/2007 10:52:27 AM > (in reply to MalibuMaxxSS) Post #: 6

RE: 93 Suburban Rear Heat Not Working Only Cold Air - 10/27/2007 1:22:35 PM    MalibuMaxxSS Posts: 598 Joined: 11/18/2006 Status: offline ok so maybe it is a plugged filter to the back and everything is being dumped to the front......I dont know if there are 2 cabin filters or not, look behind the glove box area.... _____________________________ 2006 Malibu Maxx SS, computer Flashed, undercar LED, Cold air intake, 18' Potenzas, Limo tint front to back 1990 YJ Lifted Locked and always muddy, posi loc, 33s TSLs, weber carb. drop tailgate... (in reply to 1981camaroz28) Post #: 7

RE: 93 Suburban Rear Heat Not Working Only Cold Air - 10/27/2007 1:57:25 PM    1981camaroz28 Posts: 11 Joined: 10/26/2007 From: South Philly Status: offline I did'nt even know about a filter pack. Is this something I should replace like a air cleaner? Might sound funny I just never heard of one. My kids might have put something down there I have 4 one of them did this I bet. < Message edited by 1981camaroz28 -- 10/27/2007 2:01:51 PM > (in reply to MalibuMaxxSS) Post #: 8

RE: 93 Suburban Rear Heat Not Working Only Cold Air - 10/27/2007 3:48:28 PM    MalibuMaxxSS Posts: 598 Joined: 11/18/2006 Status: offline ya all newer GM have a polin filter behind the glove box...depending on where you live you may never change it...here most people change them every year to 2 years, they plug up and no air goes thru....Im thinkin you burb has 2 one for the front and one for the back I dont knwo for sure, but worth a check, and yes should be changed like a air filter...just not as aften maybe.....look behind the glove box.... also tech just walked by and he said they have a check valve that lets the hot warm fluid go to the back he figures this is plugged or foxored...and not letting the fluid back < Message edited by MalibuMaxxSS -- 10/27/2007 3:52:12 PM > _____________________________ 2006 Malibu Maxx SS, computer Flashed, undercar LED, Cold air intake, 18' Potenzas, Limo tint front to back 1990 YJ Lifted Locked and always muddy, posi loc, 33s TSLs, weber carb. drop tailgate... (in reply to 1981camaroz28) Post #: 9

RE: 93 Suburban Rear Heat Not Working Only Cold Air - 10/27/2007 4:12:17 PM    1981camaroz28 Posts: 11 Joined: 10/26/2007 From: South Philly Status: offline Is the name of the part a polin filter? I will look it up and get a replacment. I am missing a piece off my air vent I am thinking now it might have fallen in there but the A\C is cold maybe it is blocking the door from opening. I live in South Philadelphia (in reply to MalibuMaxxSS) Post #: 10

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