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jfletch's latest activity
jfletch
reacted to
AK49BWL's post
in the thread
Low beams only stay on for 20 seconds
with
Like
.
It's built into the headlight switch itself. All GMT400s.
Feb 20, 2024
jfletch
reacted to
AuroraGirl's post
in the thread
Low beams only stay on for 20 seconds
with
Like
.
Did not know that, my suggestion now turns to being there is a short to ground somewhere on the low beam wiring which is overloading the CB
Feb 20, 2024
jfletch
reacted to
Road Trip's post
in the thread
Low beams only stay on for 20 seconds
with
Like
.
I agree with your proposed sequencing of repairs. It *could* definitely be the dimmer switch, but personally I would want to prove to...
Feb 16, 2024
jfletch
replied to the thread
Low beams only stay on for 20 seconds
.
This is a hell of an answer. Thanks so much. I'll trace all of the wiring down and see if I can find the short before I try replacing...
Feb 16, 2024
jfletch
reacted to
GrimsterGMC's post
in the thread
Low beams only stay on for 20 seconds
with
Like
.
There are 2 in the fuse box, they have aluminium cases and plug in like fuses but they reset after cooling down. I can't be sure that...
Feb 16, 2024
jfletch
reacted to
Road Trip's post
in the thread
Low beams only stay on for 20 seconds
with
Like
.
Greetings jfletch, I washed your problem description against the headlight circuit theory description in the '94 Electrical Diagnosis...
Feb 16, 2024
jfletch
reacted to
AuroraGirl's post
in the thread
Low beams only stay on for 20 seconds
with
Like
.
But rhey work if you immediately restart the truck? How about if you turn the truck off then manually turn them on
Feb 16, 2024
jfletch
reacted to
AuroraGirl's post
in the thread
Low beams only stay on for 20 seconds
with
Like
.
can you confirm or the headlamp high beams work as normal, a non work truck has 9005 high beams and 9006 low beams. A bad filament COULD...
Feb 16, 2024
jfletch
reacted to
Matt98's post
in the thread
Low beams not turning on?
with
Like
.
If it is the older style interior, look under the dash you'll see the switch on the column with a rod running to the turn signal switch...
Feb 16, 2024
jfletch
reacted to
GrimsterGMC's post
in the thread
Low beams only stay on for 20 seconds
with
Like
.
That sounds like a thermal circuit breaker doing it's job. If there is a higher than expected load the bi-metal strip contact will heat...
Feb 16, 2024
jfletch
replied to the thread
Low beams only stay on for 20 seconds
.
Thanks for the tips everyone. I think I have everything I need to get this replaced. I'm going to get the part today from autozone and...
Feb 16, 2024
jfletch
reacted to
someotherguy's post
in the thread
Low beams only stay on for 20 seconds
with
Like
.
It's really not that bad of a job, but I also haven't seen many go bad. One word of advice if you do replace it, is tape that actuator...
Feb 16, 2024
jfletch
replied to the thread
Low beams only stay on for 20 seconds
.
I was thinking the dimmer switch was the only link between the 2 I'll have to see if I can see any corrosion. Im not finding much info...
Feb 16, 2024
jfletch
reacted to
someotherguy's post
in the thread
Low beams only stay on for 20 seconds
with
Like
.
It's a '94 so I don't recall any factory relays for low or high beam, the full power of the circuit is routed through the headlight...
Feb 16, 2024
jfletch
replied to the thread
Low beams only stay on for 20 seconds
.
High beams turn on and off and work as they should.
Feb 16, 2024
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