A/C light flickering on center console

B1Sousa · February 5, 2020

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

B1Sousa · February 5, 2020

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

CollinP · July 24, 2020

I am having the same issue! Did you ever get a resolution??

Miguel Olea · November 23, 2020

Bump - mine is doing this also.

Colossus · November 23, 2020

loose connection?

JimCost2014 · November 25, 2020

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

cmt · December 11, 2020

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.

Miguel Olea · December 12, 2020

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 · December 19, 2020

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 · December 19, 2020

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 · December 20, 2020

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.