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2005 GMC SIERRA DRIVERS SIDE A/C BLOWING HOT AIR
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BARBERJOE
New User
Jun 16, 2011, 3:55 PM
Post #1 of 6
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2005 GMC SIERRA DRIVERS SIDE A/C BLOWING HOT AIR
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Read with interest that other GMC owners have the same issues with the a/c on the driver's side. I looked for recalls but didn't find any. First had the problem at 45k miles, and the dealership replaced the actuator. 13 months later, it happened but I was lucky and the truck was still under warranty. Again, after one year and many miles later, it started again last Spring (2010). I complained to GMC and finally got a partial credit to use towards another new actuator. I'm going to check for cracks along that side's tubing. I love my truck but it is getting very frustrating. Any other suggestions besides possible icing? I will check that, of course, but have to check that the next time I go to Lowe's.
(This post was edited by BARBERJOE on Jun 16, 2011, 3:56 PM)
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Double J
Veteran
/ Moderator
Jun 16, 2011, 7:16 PM
Post #2 of 6
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Re: 2005 GMC SIERRA DRIVERS SIDE A/C BLOWING HOT AIR
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Look into this Technical Service Bulletin:
May apply to your concern,may not...
#06-01-38-003: Intermittent Ticking Noise from I/P, Poor A/C Performance, HVAC DTCs B0229, B0414, B0424, B3770, (Reprogram HVAC Control Module) - (Apr 27, 2006) Subject: Intermittent Ticking Noise from I/P, Poor A/C Performance, HVAC DTCs B0229, B0414, B0424, B3770 (Reprogram HVAC Control Module) Models: 2004-2006 Cadillac Escalade Models 2004-2006 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2004-2006 GMC Sierra Models, Yukon Models with Air Conditioning (RPOs CJ2, CJ3) Condition Some customers may comment on one or more of the following concerns: • Intermittent ticking/clicking noise from the instrument panel. • Recirculation mode does not work or Air Conditioning (A/C) system performance is poor during high ambient temperatures. • Unable to control the driver side temperature. • Unable to control the passenger side temperature. • Unable to change the front system modes. Cause This condition may be caused by the Heating, Ventilation and Air Conditioning (HVAC) actuators that may hunt for the correct commanded position. This cycling may cause a clicking or ticking noise. An overtravel of the HVAC system control doors may cause one or more of the concerns listed above. If an overtravel occurs, a Diagnostic Trouble Code (DTC) will be set, and the door will go to a preset default position. When a system door defaults, that door will stay at the default position until the DTC is cleared. After the DTC is cleared, the door will operate properly until the overtravel condition re-occurs. The following table lists the HVAC system doors and the DTC associated with it.
System Door Overtravel DTC Air inlet door (recirculation door) B0229 Left temperature door B0414 Right temperature door B0424 Front system mode door B3770 Correction Technicians are to perform the normal diagnostic procedures in SI for these concerns. If diagnostics show that the HVAC system door(s) travel below 5 counts (out of the lower range) or above 250 counts (out of the upper range), then update the software calibrations in the HVAC control module. The new calibrations were made available to dealerships as part of TIS2000 incremental satellite update version 2.5, which was broadcast to dealers in February 2006. The new calibrations have been updated to compensate for the actuator overtravel condition, the actuator hunting and the ticking/clicking noises. The new calibrations effectively eliminate the codes listed above, the default position of the doors associated with the DTCs and opens up the feedback position value. The new calibrations should not be used unless the vehicle has one or more of the customer concerns listed above or a DTC listed above has been set. The new calibrations will not correct any other DTC or A/C system performance concern.
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BARBERJOE
New User
Jun 16, 2011, 8:39 PM
Post #3 of 6
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Re: 2005 GMC SIERRA DRIVERS SIDE A/C BLOWING HOT AIR
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Thanks. I will check it out and get back to the forum with the results.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jun 18, 2011, 9:11 AM
Post #4 of 6
(27813 views)
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Re: 2005 GMC SIERRA DRIVERS SIDE A/C BLOWING HOT AIR
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Check your pressures and bet you have a low charge and leak to find and fix. Evap is on passenger's side so it will cool first and the symptoms you are having are typical of low charge,
T
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BARBERJOE
New User
Jun 24, 2011, 2:55 PM
Post #5 of 6
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Re: 2005 GMC SIERRA DRIVERS SIDE A/C BLOWING HOT AIR
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Don't know about that. It was checked out both times at the dealership and no leaks were found and the pressure was fine. The actuator was replaced both times, and worked for 12 months and 1 week.
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BARBERJOE
New User
Jun 24, 2011, 2:59 PM
Post #6 of 6
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Re: 2005 GMC SIERRA DRIVERS SIDE A/C BLOWING HOT AIR
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FYI One of the replies sent along info saying to check if there was a wet spot under car after parking when using the a/c.....and the answer is: yes. So that's not the problem.
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