Hi beam? Lo beam? Both?
[SOLVED] Continuing the Mystery of a 2003 Tahoe with electrical issues
- Thread starter Firebirdracer82
- Start date
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Hi beam? Lo beam? Both?
Inspect and clean G104 yet?
Headlamps and AC clutch and TAC share that ground point.
G104 — 2003 Chevrolet K Tahoe 4WD V8-5.3L VIN T Service Manual | Operation CHARM
Detailed repair manual for the 2003 Chevrolet K Tahoe 4WD V8-5.3L VIN T.
charm.li
Location of G104....
Lower LR of the Engine Components — 2003 Chevrolet K Tahoe 4WD V8-5.3L VIN T Service Manual | Operation CHARM
Detailed repair manual for the 2003 Chevrolet K Tahoe 4WD V8-5.3L VIN T.
charm.li
Firebirdracer82
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Which one is G104? Drivers side engine block? I’ve done that one but might get in there and do it again.
when I had a my gmt800 I ended up grounding the headlight circuit right to the frame under the lights (both sides), solved a flickering problem I had.
it's only 3 wires, low/high/ground. Headlights are normally grounded so doesn't hurt anything.
it's only 3 wires, low/high/ground. Headlights are normally grounded so doesn't hurt anything.
Firebirdracer82
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That was it! G104 was disconnected by prior owner and got it done. Problem solved! You guys are awesome!
Score! I see responses from a few well-grounded people! 
afpj
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@Firebirdracer82 Was it the driver's side rear block? What is meant by you having done that one before, but it was disconnected by PO...are we talking about the same ground point?
Thx!
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Firebirdracer82
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Correct the prior owner swapped the trans and didn’t bolt back this ground. Think it had intermittent weak ground sitting on the block but that ground was the one.
