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Ski-me · 07-02-2018, 11:23 AM

Many times it can also be one of your actuators. For my 2004' there are three main ones in the dash.

One on top of the heater box, one on the bottom side of heater box and one at the air inlet (side of heater box). All three are Part number 89018365

The one on top of the box is the most difficult to change out.

These are common problems and if you haven't changed them, they may be due unfortunately.

https://smile.amazon.com/Genuine-890...words=89018365

07-02-2018, 11:23 AM	#5
Ski-me Registered User Join Date: May 2012 Location: Colo Springs, CO Posts: 870	Re: No AC on 2003 Suburban Many times it can also be one of your actuators. For my 2004' there are three main ones in the dash. One on top of the heater box, one on the bottom side of heater box and one at the air inlet (side of heater box). All three are Part number 89018365 The one on top of the box is the most difficult to change out. These are common problems and if you haven't changed them, they may be due unfortunately. https://smile.amazon.com/Genuine-890...words=89018365 __________________ - Jeff 89' K5 Blazer, 2.5" lift, 35" tires 04' GMC Yukon XL, 3/4 ton, 8.1L Last edited by Ski-me; 07-02-2018 at 11:31 AM.