One problem related to battery cable has been reported for the 2003 Chevrolet Tahoe. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Chevrolet Tahoe based on all problems reported for the 2003 Tahoe.
I can be going down the highway running 65-70 mph and the reduced engine power light will come on and reduces my speed to 10 mph! I pull over, disconnect the battery cable and replace it, then I could continue for another week or so. Finally, I left the diagonstic computer in my truck and was able to capture the code p1125. The mechanic said to replace the throttle body. That was done in October. It ran fine for a while, but it started doing it again. The throttle body was replaced again! now, two months later, it's doing it again! no one can seem to fix the problem. Meanwhile, I am a female who travels the highways everyday going back and forth to work and I have been in several dangerous situations due to this problem that will not stop! as of now, I can not drive my truck and having to rely on carpooling again until it's fixed for the third time in the past 6 months. It also appears that several people are having the same problem with no results. Someone is going to get killed if this is not addressed soon!.