Elect issue, killed two new batteries. A test light between the Neg a cable. Pulled all fuses and relays. The test light after pulling 3 of the many fuses TBC, RDO, head light fuses. ? tbc?

Asked by Feb 25, 2015 at 08:41 PM about the 2003 Chevrolet Blazer 2 Door LS 4WD

Question type: Maintenance & Repair

Test light went from very
bright,fated, light element
glow. after pulling the 50 amp
head light fuse No more test
light glow. What is the TBC
abbreviation? It effects the
tailgate lock. What would
cause so many issues?

2 Answers

217,665

You need a multimeter, check out this link...https://www.youtube.com/watch?v=KF1gijj03_0

16,905

Have u verified the alternator is good? Don't say "it's charging" there is more to it than that

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