ac problems inside vehilce - Chevy and GMC Duramax Diesel Forum

04.5-05 LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

 
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post #1 of 7 (permalink) Old 06-26-2010, 07:39 AM Thread Starter
 
Join Date: Jun 2010
Location: savannah,ga
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Exclamation ac problems inside vehilce

i have 05 lly 4x4 crew lt ac doesnt want to act accordingly..have to turn on and off a couple times..a popping sound is heard when doing this...also would this contribute to skipping at 45 to50 mph...someone told me i could have vaccume leak....i do have k/n cold air,,,4" magnaflow turbo back,,,,,,juice with attitude,,,stock wheels
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post #2 of 7 (permalink) Old 06-26-2010, 08:24 AM
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Location: Jacksonville NC
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open your hood and turn the a/c on max or 60 and see if the a/c clutch turns on. if the center of the pulley is spinning then its engaging. there is a low preassure sensor in the ac system right next to the compressor so if you refrigerant level is low the compressor wont turn on

05 GMC Sierra CC/LB Dually
AMP Research steps
4" MBRP to stack
Resonator plugged
Pcv reroute
ALL on mod
7" mitre cut stack
EFILive
14.482 @ 93.93 AUG 13
Stock trans, 2wd and 80psi in the back tires
WT #7350
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post #3 of 7 (permalink) Old 06-27-2010, 05:11 AM Thread Starter
 
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thanks grizzly but the problem is inside the vehicle...outside is fine .
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post #4 of 7 (permalink) Old 06-27-2010, 06:58 AM
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so the a/c controller isnt staying on or the blower motor or what

05 GMC Sierra CC/LB Dually
AMP Research steps
4" MBRP to stack
Resonator plugged
Pcv reroute
ALL on mod
7" mitre cut stack
EFILive
14.482 @ 93.93 AUG 13
Stock trans, 2wd and 80psi in the back tires
WT #7350
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post #5 of 7 (permalink) Old 06-27-2010, 06:43 PM Thread Starter
 
Join Date: Jun 2010
Location: savannah,ga
Posts: 4
someone told me to check the vacumm servos that operate the doors inside the heater box....may have leak and maybe the cause of my other problems
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post #6 of 7 (permalink) Old 07-10-2010, 06:19 AM Thread Starter
 
Join Date: Jun 2010
Location: savannah,ga
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i have replaced the blower resitor at 145.00 from dealer it solved the problem
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post #7 of 7 (permalink) Old 08-23-2010, 02:48 PM
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Location: pace fl
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air blend door on mine was not working fixed at dealership.
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