New to me 04 Yukon SLT - The 1947 - Present Chevrolet & GMC Truck Message Board Network

krue · 08-12-2018, 10:48 AM

Just bought this for a daily driver. Unhooked battery to troubleshoot a window washer leak. When I reconnected battery the HVAC mode door quit. Finally got it fixed by unplugging and reconnecting the head unit. So how do I prevent this from happening again? Eventually I'm going to need to disconnect the battery to work on something.

krue · 08-15-2018, 10:36 PM

Nothing?

slowcpe · 08-16-2018, 08:38 AM

Are you talking about the blend door? They are known for their issues. Mine would get stuck and wouldn't adjust unless the truck was turned off for a while. I actually never fixed it, just adapted. Get on the Tahoe-Yukon forum. A lot of good info there.

I had a 2000 nbs Tahoe and it was a great vehicle. Sold it a couple of years ago with 267k and its still going strong approaching the 300k mark.

krue · 08-16-2018, 09:12 PM

My issue was the mode door, which selects where the air blows. It's just above and inboard the gas pedal. The real issue was the BCM wouldn't complete whatever relearn process it goes through. Every time I turned the key ON the actuator would go through all the positions and then end up blowing air on the windshield.

08-12-2018, 10:48 AM	#1
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	New to me 04 Yukon SLT Just bought this for a daily driver. Unhooked battery to troubleshoot a window washer leak. When I reconnected battery the HVAC mode door quit. Finally got it fixed by unplugging and reconnecting the head unit. So how do I prevent this from happening again? Eventually I'm going to need to disconnect the battery to work on something. Attached Images __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

08-15-2018, 10:36 PM	#2
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	Re: New to me 04 Yukon SLT Nothing? __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

08-16-2018, 08:38 AM	#3
slowcpe Registered User Join Date: Sep 2013 Location: Evansville, IN Posts: 1,774	Re: New to me 04 Yukon SLT Are you talking about the blend door? They are known for their issues. Mine would get stuck and wouldn't adjust unless the truck was turned off for a while. I actually never fixed it, just adapted. Get on the Tahoe-Yukon forum. A lot of good info there. I had a 2000 nbs Tahoe and it was a great vehicle. Sold it a couple of years ago with 267k and its still going strong approaching the 300k mark. __________________ Ryan 1967 Red Stepside..."Laymond" http://67-72chevytrucks.com/vboard/s...40#post6441840 1972 Medium Olive SWB-Chester http://67-72chevytrucks.com/vboard/s...d.php?t=759628 1967/71 Blue SWB C10..SOLD 1977 SWB K10..my grandpa's.....never should have sold

08-16-2018, 09:12 PM	#4
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	Re: New to me 04 Yukon SLT My issue was the mode door, which selects where the air blows. It's just above and inboard the gas pedal. The real issue was the BCM wouldn't complete whatever relearn process it goes through. Every time I turned the key ON the actuator would go through all the positions and then end up blowing air on the windshield. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

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