Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
The battery is located on the drivers side inner fender apron. You will need to look for the engine control computer. That is actually on top of the box. Here is an illustration. #1 in the picture is the computer and #2 is the box that houses the battery. Let me know if you have any questions.
Here is another illustration that shows what it looks like as you remove the battery box cover.
I just recently purchased a 2004 Tahoe with 155000 miles