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A/C light flickering on center console

B1Sousa

By B1Sousa
in Troubleshooting & Recalls

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B1Sousa New Member

B1Sousa

Posted
Posted

Hi folks.

 

Just bought a 2017 GMC Sierra SLT with 66k on it Saturday. Today I noticed (this evening when it was dark) that the A/C button light flickers... sometimes it stays on for a few seconds and sometimes dark for a few seconds, and sometimes flickering back and forth constantly. The air conditioner isn’t on, btw.

 

Just curious if this is the start of electrical issue, or is it simply a small bulb or something burning out. Everything around it is lit up and fine.

 

thanks

  • 5 months later...
  • 3 months later...
JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted
On 2/5/2020 at 4:36 AM, B1Sousa said:

Update: now the defrost button close by is doing the same thing 

Maybe this?

 

  • Symptoms of a failed headlight switch include:
  • Headlights and taillights failing to turn on or off
  • Interior lights flicker, or fail to turn on or off
  • Gauge cluster lighting off or flickering with headlights on
  • Parking light malfunctions
  • 3 weeks later...
cmt New Member

cmt

Posted
Posted

My 2018 Sierra's AC light is also flickering at night. The AC is not on. The light becomes dim and then it stays on and then gives off. I noticed this a few weeks ago.

  • Like 1
Miguel Olea Enthusiast

Miguel Olea

Posted
Posted

yah - my truck is still under the 3 year 36,000 mile warranty.  I bought a new control unit for 95.00 shipped from ebay.  I don't trust the shoddy techs ripping my aluminum trim off and the center screen to get the controls out; I'd rather do it myself!  From what I've read it's pretty common, so I'm sure my new part will only do it again.  I plan on shipping my old part out to a guy I know that can solder in new replacement led lights. 

Miguel Olea Enthusiast

Miguel Olea

Posted
Posted

replaced control with a new GM one from ebay $100.00 shipped.  Although my truck is still under warranty, I'm sure the dealer would have broken a few of the clips that hold the aluminum bezel around the center stack.  They "love" warranty work.  That trim was a ****** to take off with out breaking/bending!  My old part was 84258726 the new part is the same with the last digit being a  9.  As I'm sure, that in two years, this will happen again, I'm sending my old part to 1mr.repairman so he can replace all the led lights with quality parts and i will swap it back in when the new GM one goes on the blink.  Kind of sucks for a $50+ truck!

JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted
1 minute ago, Miguel Olea said:

replaced control with a new GM one from ebay $100.00 shipped.  Although my truck is still under warranty, I'm sure the dealer would have broken a few of the clips that hold the aluminum bezel around the center stack.  They "love" warranty work.  That trim was a ****** to take off with out breaking/bending!  My old part was 84258726 the new part is the same with the last digit being a  9.  As I'm sure, that in two years, this will happen again, I'm sending my old part to 1mr.repairman so he can replace all the led lights with quality parts and i will swap it back in when the new GM one goes on the blink.  Kind of sucks for a $50+ truck!

Did all of the functions still work on the old HVAC control? I thought that when something went out, like a light, or a switch function, they were garbage.

Miguel Olea Enthusiast

Miguel Olea

Posted
Posted

everything worked - just the back lights would flicker or stay off.  Such a chintzy design.  All the lights still work on my 06 Yukon with 160,000 miles.

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