The lights will flicker,but once you turn the lights on they stop.Turning them back off,daytime lights flicker again.I am thinking it is the module, is it easy to get to under the dash?A mechanic told me there is a relay involved too.

hi, gm vech. are elec.complex with logic that is all there own. im a retired ford tech, and gm would drive me crazy sometimes. now some ideas, your dash light are controlled with an ecm, keep in mind, your dashlights and tail lights are on the same circut. i would check your batt. cables, if your ground cable has a high resistance it could cause issues. in fords they had bad dimmer switches that would cause the same issue. if you have someone with an obd2scanner it might have a code.hope that helps.

You have a problem with the daytime running lights system. It could be the sensor, relay or body control module. The sensor is on the top of the dash, there is a panel up there that pops of to access it. (be careful because they do break easily). The relay is in the under hood fuse panel. The BCM is under the dash. It could be one of these or just a bad connection at the BCM,relay, or sensor. These are the reason it flashes. When you turn the lights on manually, it bypasses all of this. Fixing this, you need a volt meter and wiring diagrams.

check fuse panel first for blown fuse,second check your daytime running lights come on without flickering. if problem persists- all these are affected by headlight switch- controls interior lighting and headlamps and daytime driving lights

the daytime runnig lights are inoperative, could be the module, relay or a bulb, usually bad wiring, go to cavalier daytime running lights on the web,, there you will get diagnosis directions

There are many things to test
1- grounds terminals or circuit daytime running lights (most common)
2 - voltage drop at the module
3 - you need to have the same kind of headlights bulbs
example: two the same amps and products
Hope it help.If you need more just send me your info

The daytime running lights are designed to be always on. The only way I can think for you to turn them off is to go to the fuse panel on the left end of your dashboard and pull fuse #8...I'm pretty sure that is the fuse for the DRL module. Check your owner's manual and verify that, ok?

First check your baterry terminals, make sure they are clean and secure.
If it's your daytime running lights that flicker, check the DAYTIME RUNNING LAMP MODULE
If it's headlights, check the switch.
I hope this helps

change the drl module( drivers side) left below headlight and remove plug, stops flashing and no more drl free solution ....or change drl module approx 70.00 pt price

replace your day time running light module.

the daytime running lights or DRL's as we call them are controlled throught the DRL module, replace that module.