Alternator is failing.
POSSIBLY A BADGROUND
Sounds like you need a new battery.
Yea its an electric or body comtrole module .about 400.00to repair at dealer. Will cause lights to flicker off & on and sometimes horn will chirp also while driving
what causes a 2004 4.8liter cheverolet truck to run hot
Flicker Rocks Harder was created on 2004-05-04.
Low refrigerant charge
check the brake light relay under the hood
The rheostat in the light stalk is dirty and getting a bad connection causing the dash lights to flicker dim to bright and so on. Try turning the reading and dash lights on and off several times moving the rotary switch from all the way off to all the way on abd back several times. This sometimes will clear the problem for a period. If not, the light stalk will require replacement.
The 2004 Chevrolet Express has 12 valves.
The 2004 Chevrolet Tahoe has 16 valves.
The 2004 Chevrolet Impala has 12 valves.
The 2004 Chevrolet Colorado has 16 valves.