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Fixed the AC in the Suburban today.. #4803457
07/02/18 07:22 PM
07/02/18 07:22 PM
Joined: Feb 2009
Posts: 1,578
wv
krismoriah72 Offline OP
krismoriah72  Offline OP
Joined: Feb 2009
Posts: 1,578
wv
Its been hot lately and while driving my 03 suburban down the road the a/c is nice and cold..however at stoplights or idling...no bueno.

I checked everything i could but nothing was wrong. AC works great except while idling...

I had a suspicion it might be the fan clutch.. so i spun it by hand..seemed taut.

The SUV is 15 years old and by the looks of the fan clutch its OEM..so i gambled $50 and installed one.

I spun each by hand side by side and the newer one was a bit tighter but not $50 tighter..

I installed it and started the engine-- ROAR said the fan. I hadnt heard that noise in the 2 years that I have owned it.

Problem solved.. going to take some getting used to the ROARing of the fan but good to know i needed one.

I had two options Heavy Duty or Severe Duty. From what i gather the Severe duty pulls harder more often robbing horsepower and gas mileage. If i made a living towing i would probably do the Severe Duty but the HD one does alot more than the worn out one has been doing.

Re: Fixed the AC in the Suburban today.. [Re: krismoriah72] #4803464
07/02/18 07:38 PM
07/02/18 07:38 PM
Joined: May 2010
Posts: 9,064
North Carolina
spasm3 Offline
spasm3  Offline
Joined: May 2010
Posts: 9,064
North Carolina
I replaced the one on my avalanche. The a/c now works great at idle, and low speed. I heard that the other brands would over engage. So i went oem. Was over $100 for the delco oe one.

Last edited by spasm3; 07/02/18 07:41 PM.

13 elantra 70k 5w30 QSUD
03 chevy avalanche79k synpwr 10w30
01 saturnsc1 185k synpwr rebuilt
17 mazda cx-5 5600 miles m1 0w30
Re: Fixed the AC in the Suburban today.. [Re: krismoriah72] #4803466
07/02/18 07:40 PM
07/02/18 07:40 PM
Joined: Jun 2003
Posts: 17,374
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,374
Deplorable in apple valley, ca
I am replacing Tahoe ,suburban and Chevy truck fan clutches a lot lately atleats 2-3 a week.


02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: Fixed the AC in the Suburban today.. [Re: krismoriah72] #4803617
07/02/18 10:35 PM
07/02/18 10:35 PM
Joined: Feb 2013
Posts: 10,719
Phoenix, AZ
Nick1994 Online content
Nick1994  Online Content
Joined: Feb 2013
Posts: 10,719
Phoenix, AZ
Had the same thing happen with my grandparent's Trailblazer. A/C was absolutely terrible at awful, I was driving my grandparent's around in 115+ degree heat and it was unbearable. Had my mechanic replace the fan clutch... Incresible A/C, and as you said the roar on startup, had never heard that before.


2015 Hyundai Sonata 2.4L 84k Mobil 1 AFE 0w30 & OEM
2000 Toyota Camry 2.2L 230k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: Fixed the AC in the Suburban today.. [Re: krismoriah72] #4805717
07/05/18 11:14 AM
07/05/18 11:14 AM
Joined: May 2009
Posts: 1,081
ohio
caravanmike Offline
caravanmike  Offline
Joined: May 2009
Posts: 1,081
ohio
I just replaced the fan clutch on an 03 Sierra. Same problem, no A.C. At idle. Fan clutched fixed it! Thanks for reminding me!


Oils I use: Any 5w-30,5w-20 conventional


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