2006 Silverado LT2 Heater Not Working Properly

[lryfer]

Hello all: I have a 2006 Silverado LT2 that is having heater noise issues. The control head has the knobs to adjust temp for either side. When turning on the heater there is a clicking noise on the right side of the cab and the fan doesn’t work. At times after running and getting warmed up the heater fan then starts to run and function properly after I turn the heater on and off. This is very frustrating. Dealer looked at it and found a connector that needed attention. I was told if this doesn’t correct the issue I would need to replace the heater control head in the dash.

 

Does this make sense changing the controls in the dash with the noise coming from the right side of the cabin?

Also, the heater doesn’t seem to warm up the cab like my other 2006. My other 06 at 73 cooks the cabin. The truck having the issues with fan on has to be cranked up 78 or so to be luke warm. Was told it is functioning properly.

 

Do I need to go elsewhere to have this truck looked at? Control head to replace is 450 bucks from what I am told.

Need help so I don’t waste money on chasing a heater issue.

 

Thanks for guidance with this issue.

[SpartanAutoworx]

Sounds like the blower motor resister and pigtail to me. Pull the BMR Pigtail off and see if it is burnt.

[kstruckcountry]

Your dealer doesn't know their stuff. This is a common issue. The blower motor "resistor" fails and sometimes also melts the connector plugged into it. There was even a recall on the version in the manual AC setup. I'd bet the resistor is your issue.

 

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[lryfer]

someone informed me there possibly was a recall or bulletin on this issue that GM paid for repairs. Anyone know the bulletin number so i can take to dealer to haggle them since they steering me in the wrong direction thus far.

[SpartanAutoworx]

No TSB that I know of

[Nanotech Environmental]

someone informed me there possibly was a recall or bulletin on this issue that GM paid for repairs. Anyone know the bulletin number so i can take to dealer to haggle them since they steering me in the wrong direction thus far.

There is a TSB on the blower motor resistor/connector. I did mine 2-3 years ago. I ended up doing it myself with parts given to me by the dealer. They were too busy with recalls and couldn't get me in for a month, during a cold snap & I had no heat. They gave me the parts so I could do it myself.

 

I don't recall the TSB number etc.

[daleone3]

The part is located behind glove box and very accessible. Can be found anywhere on line and it's a 30 minute install.

 

 

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[lryfer]

Here is the TSB that i found. My truck does not have these codes in the VIN Decoder or glove box. Will this TSB still pertain to my truck?

 

Bulletin No.: 11046

 

Date: April 07, 2011

 

Subject: 11046 - Special Coverage Adjustment - Heating, Ventilation, and Air Conditioning Blower Not Fully Functional on All Blower Speeds, Inoperative, or Runs Continuously with the Ignition Off

 

Models:

2003-2006 Chevrolet Avalanche, Suburban, Tahoe

2003-2007 Chevrolet Silverado

2003-2006 GMC Yukon, Yukon XL

2003-2007 GMC Sierra

Equipped with Manual HVAC (CJ3) or Heavy Duty Heater (C42)

[kstruckcountry]

No. The TSB is for the manual AC setup only.

 

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[lryfer]

didnt think so. Then should i go with the dealer saying the control module will need replaced vs. resistor?

[kstruckcountry]

I'd do the resistor. I don't know why there was never a TSB on the auto AC pickups, but it seems like it was just as common on them. The connector they found that needed replaced plugs into the resistor itself, and it's very common for it to melt when the resistor goes bad. If you do the resistor and pigtail it should fix the issue.

 

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