Truck Has No Power

[gmc1991]

i have a ( 1991 Gmc Sonoma 4.3 v6 ext cab truck )

i went to go and start it the other day it worked i then turned on my heater and the truck just died and never re-gained it's power back

with that said

 

i changed my ( ign switch on the lower column ) and changed the fusible link in the starter soliod ) neither one of these did anything for me i checked my battery and it is good

checked links on m alt they are good

 

i have head lights brake lights and a dome light that works

 

when i put my key in and tuen it to me i get the radio to work but that is all that works in my truck

 

no dice i looked at the power wire going to the starter and it's good

looked at the ground wire and it's good

 

i re-re-placed the fuseable link on the soloind no dice

 

looked for loose wires around the engine all good

 

looked under the dash panel at the fuses

 

all are good -except i found one ( shunt fuse ) that would not light up on my tester light what does a ( shunt fuse ) do any way

[ChRoNo16]

Not sure, could it possible be your ECM? what happens when you turn the key?

[gmc1991]

found problem its works now

[cliobogger]

you gunna tell us what it was...?

[txab]

you gunna tell us what it was...?

It was low on blinker fluid.

[xertechx]

Dont forget to check your muffler bearing.

[exracer]

found problem its works now

 

 

 

probly had it in gear ...anyways thanks for the info as it may someone else out in the future

[jdubub]

we prolly will not see him again