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Chevrolet Suburban and Tahoe AC and Climate Control Questions

136 messages,  Last post on Nov 05, 2009 at 9:24 AM

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#107 of 136 climate control on '03 suburban by krd120203 Dec 04, 2008 (4:51 pm)
My climate control is only working on the settings of 4 and 5. from 0 to 3 the air comes through as a breeze. What could be the problem with my system? The blower is working at the correct strength at both 4 and 5, and the rear blower is working just fine in all settings. Replies to this message: arrie (Dec 05, 2008 8:44 am)
#108 of 136 Re: climate control on '03 suburban [krd120203] by arrie Dec 05, 2008 (8:44 am)
Replying to: krd120203 (Dec 04, 2008 4:51 pm) I had the same problem with a '02 Pontiac Grand Am and it was caused by burned out blower speed control resistor.   In that Pontiac blower fan speed control is done with resistors, i.e. with each fan speed the voltage to the fan motor goes thru a different resistor, which drops the voltage for the motor for a set fan speed. Resistors are located in the air flow duct by the fan, i.e. the resistors that heat up as they lower the voltage are cooled by the air flow that the fan makes. This is why it is the lower speed resistors that usually fail because the air flow is lower. I also think there are more than one speed connected in series so when just one of those burns it takes all of the speeds out that are in that series. I also lost lower 3 fan speeds when it happened.   As I said above this writing is with a Pontiac Grand Am but I would not be surprised if your Tahoe would have exactly the same construction for blower fan speed control so look at the air duct around the blower. You might find a small circuit board bolted in the side of it, which has those fan speed resistors built into it. You can probably buy a new one at car part store other than a dealer just as I was able to for My Pontiac.   Arrie
#109 of 136 Re: Air flow [bingram] by zigfreed Apr 19, 2009 (4:12 pm)
Replying to: bingram (Nov 19, 2008 6:40 am) Did you ever figure out the Air flow problem on your suburban, I am having the same issue.   Thanks Replies to this message: krd120203 (Apr 20, 2009 5:05 pm)
#110 of 136 Re: Air flow [zigfreed] by krd120203 Apr 20, 2009 (5:05 pm)
Replying to: zigfreed (Apr 19, 2009 4:12 pm) I did find out what it was. It is a fan blower resistor. It is located under the glove box. It is extremely easy to fix. I was only able to find the part from GM. Napa did not have it and could not get it for my model year. It took me maybe 10 minutes to take the cover off and switch the part out. Hope this helps you.
#111 of 136 '00 Suburban AC questions... by suburban68 May 03, 2009 (5:04 am)
Hi all. I own a 2000 C1500 Suburban. HVAC equipment is C60 (front, manual control) and C69 (rear, manual control) As I can find easily used controls on eBay, is there any way to simply upgrade my AC to electronic control? Is wiring pin to pin compatible? Olivier (from France)
#112 of 136 Re: AC / Heat Noises 2002 Chevy Tahoe [natale] by carlosrubio310 Jul 08, 2009 (4:01 pm)
Replying to: natale (Jun 25, 2008 3:24 am) I had the same problem. I replaced the ac compressor ( rebuilt) and work good its been about 1 year ago, i did the repairs my self, I spend about $200.00
#113 of 136 fan works on all settings but 5 by sulli031 Jul 08, 2009 (5:00 pm)
I have a 2002 Tahoe and the fan works on blower settings 1 - 4 but shuts down on setting 5. Any ideas what's wrong and how to fix? Thanx.
#114 of 136 warm air in front cold air in rear by blackpacific1 Jul 13, 2009 (6:45 am)
My 1999 Suburban blows warm AC in the front, and ice cold air in the rear. It also does not have the lower fan speeds, most of the time they are not working, but intermittently they will work, while the high speed position works most of the time. I think this problem might be a bad fan control resistor, but I am not sure how it would impact the front AC operation. Any suggestions? Replies to this message: noclue1970 (Jul 14, 2009 7:18 am)
#115 of 136 Re: warm air in front cold air in rear [blackpacific1] by noclue1970 Jul 14, 2009 (7:18 am)
Replying to: blackpacific1 (Jul 13, 2009 6:45 am) I have the same problem on my 1999 tahoe did you find the problem?
#116 of 136 AC question by bamahoov Jul 15, 2009 (12:17 pm)
I have a 04 Tahoe, and its doing the same thing with the AC. The front vents blow hot ait, but the back vents blow out cold air. What the deal? Thanks guys. Replies to this message: blackpacific1 (Jul 17, 2009 5:43 pm)

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