Hi, vehicle is 2000 4.3L Silverado. The cruise light in dash does not work when cruise is set. For background, the cluster went out (would lose gauges, speedo, etc.) during this same timeframe, I would notice while using cruise the green light on dash would fade - like weak voltage or ground and sometimes go out completely. Start up a few days later and would basically do the same thing, bright and then fade...it eventually quit coming on all together. I figured it was related to the cluster. I ordered and installed a new cluster, everything works - all lights, warnings, etc. BUT - the cruise light still will not illuminate; cruise itself works perfect, will set, accel, coast, etc. My initial thought, since cluster was new, that maybe it was a bad bulb, so I pulled the cluster and ran jumper direct to bulb - the bulb is ok. So, does anybody know where either the hot wire or ground for the cruise indicator bulb is or if something signals this light to come on? The cruise functions work perfect, and the bulb is good, so from my perspective it would likely be some type of signal to complete this circuit to turn the light on.

 

Is it one of the incandescent bulbs or is it an LED? Because LED is polarity sensitive.

 

Hi - no, all the bulbs are standard incandescent. My guess was either the cruise module wasn't sending signal to turn light on, or some ground/hot wire isn't making it to where it should? Everything else in cluster works

 

I believe the light only comes on when the CC is actually engaged. It could be a questionable connection for the bulb. Those twist lock connectors for the bulbs are terrible and I had to mess with some of mine to get the lights to turn on. So unfortunately, this could turn into a bit of a headache for you if that's the issue. My CC light also doesn't work, but the CC itself does. As far as I'm concerned, that's what really matters lol but I completely understand wanting to address that.

 

Yes correct, only comes on when engaged. I was just trying to get everything top notch on the truck and this is more of a bother, but not really a major problem. I might dink around with it a bit more. I just found an overview of system from Chevy and it states the module sends signal to PCM/VCM to activate light, so could be that, but I dont know if it's worth getting that involved with.

 

Well JW11432, I pulled the cluster and made sure pink was hot with key on and checked the pinouts for tightness, no problems here. Then I jumped the light at the back of socket where terminals are - light came on. Thought it was dead end, then I tried at the actual contact points (where twist lock connector meets the cluster board), and it wouldn't come on. Took it off and lightly cleaned the contact points at cluster and twist lock, re-tested and it worked. Put it all back together and drove down the road - all good. so, it looks like my case it was indeed the twist lock connection. Thanks for your advice!

 

Beautiful. Glad it was just that!