I had the same problem with my 2001 I looked closer and found there are screws that are hidden real well that have to be removed first,then the light just pops out. Good Luck There were two screws on the outside of the light hidden in the trim, and one screw underneath. After that the light came off and simply tightening the bulb made it burn again.
There is a third screw between the brake light and the bumper.
It means the Anti Lock Brake system isn't working properly
2004 3.5 Isuzu rodeo 2wd reduce power light
To change the brake light bulb on a 2003 Isuzu Rodeo, first, open the rear hatch and locate the tail light assembly. Remove the screws or clips securing the assembly, then gently pull it out to access the bulb socket. Twist the bulb socket counterclockwise to remove it, replace the old bulb with a new one, and reassemble by reversing the steps. Make sure to test the new bulb before securing everything back in place.
The check trans light may light up in an Isuzu Rodeo, because there are problems with the transmission, The light will show up on the cars dashboard.
To replace the brake light on a 2000 Isuzu Rodeo, first, open the rear hatch and locate the tail light assembly. Remove the screws or clips holding the assembly in place and gently pull it out. Twist the bulb socket counterclockwise to remove it, then replace the old bulb with a new one, ensuring it's securely fitted. Finally, reassemble the tail light by reversing the steps and test the new brake light to ensure it works.
If its the bulb you have to unscrew the light cover and pull out the old bulb and put the new one in.Then screw the cover back on.
The oil light could be blinking in an Isuzu Rodeo because it is time to get the oil changed. This could also occur if the oil is low.
4x4 indicator light
It is called a Rear dome light or Cargo Light(on the inside ) the one on the outside is the center or "Third" Brake light It is called a Rear dome light or Cargo Light(on the inside ) the one on the outside is the center or "Third" Brake light
2000 Isuzu Rodeo brake light bulb lamp replacement: Purchase the correct replacement brake light bulb(s) first, before disassembling the vehicle. See sources and related links below for replacement brake light bulb information. Then consult your owner's manual for the replacement procedure. As simple as it sounds, the owner's manual is the best place to start for brake light bulb lamp replacement instructions and illustrations. You may want to consider replacing both left and right at the same time in order to keep brightness and color equal (optional).
when all three of those lights turn on that means that your alternator is bad. i just went threw this same problem with my rodeo