I have a problem with the #5 fuse blowing in the under dash relay box located on the right side of the dash.It protect the a/c,egr solinoid,p.s. pressure switch,the tcc solinoid,and the cannister purge solinoid.plus the shift solinoids in the trans. but the fuse only blows when turning on the a/c.The a/c blows cold for one or two minutes then blows the fuse.The fuse is a 15 amp and is # 5 on the relay /fuse panel.I have tested all the solinoids and pressure switchs plus replaced the bcm/ecm but all i have to show for all my work is a pile of blown fuses. Any ideas Everything works fine until i turn on the a/c then the transmission has to be shifted manualy
Thank you but as it turned out the a/c clutch magnetic coil was shorted internaly. There was a small water leak dripping on the clutch apparantly for quite some time that caused the coil to short and blow the fuse. I replaced the complete clutch and coil now everything is working fine i also repaired the water leak so hopefuly that ends that problem .It is hard to believe so many systems are protected by a 15 amp fuse.The A/C fuse blows and then the transmission doesn't shift what was G.M. thinking? Anyway thanks again JDABE
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The way you describe it, it sounds more like a loose connector or faulty wire to me. Fuses do not blow then "unblow" for a few seconds then blow again. I would recommend checking the power and ground circuits to your instrument cluster.
Another thing that is important that you understand is that fuses do not cause electrical system failures. Electrical system failures cause blown fuses.
With all that said, there are 2 fuse boxes. One is under the hood on the right fender apron and the other is under the dash at the right kick panel.
There are also 2 fuses that provide circuit protection for your instrument cluster. One is 15 Amp fuse #16 in the underhood power distribution center and the other is 10 Amp fuse #9 in the junction block under the dash.
Located behind the left side of the instrument panel.
Cooling Fan Controller Module
Located behind the right side of the instrument panel.
Cooling Fan Relay
Located in the air conditioning cooling fan control module.
Electronic Control Assembly
Located under the left side of the instrument panel.
Electronic Engine Control Power Relay
Located behind the glove box on the right side of the instrument panel.
Fuel Pump Relay
Located behind the glove box.
Located in the fuse block.
Let me know if this helps. If not, let me know.
The fuse panel is located below and to the left of the steering column.
Fuses are a one-time circuit protection. If a circuit is overloaded or shorts, the fuse will blow thus protecting the circuit. A fuse will continue to blow until the circuit is repaired.
Main fuse box located on driver's side to the left of the steering wheel, above the brake pedal.
The fuse panel contains fuses which protect the various electrical
systems. Also included are the turn signal and hazard flashers, and the
chime module. The panel is usually located under the dash on the left
hand side near the kick panel. There may also be an auxiliary fuse panel
in the engine compartment.
The Power Distribution Center contains
relays and fuses which further protect the electrical systems. It is
usually located under the hood on the right side of the engine
Fuses and relays are replaced by simply unplugging the defective
unit and inserting a new one. Ensure the ignition is
when replacing any fuse or relay.
The fuel pump relay (square/silver looking part) is located right above
the fuse box panel under the driver's side dash. Go under
the driver's side and you will see two squares. It'll be the one that is higher up
there are several fuse boxes. what isn't working. there is 1 on passanger side of the trunk. one in front of the brake master cyl. in the engine compartment and I beleive there is one on the l side of the dash behhind the plastic cover. there is also an overvoltage protection relay under the plastic cover on the right side of engine compartment behond rear firewall. the cover is retained by 4mm allen head bolts or phillips screws