Question about 2005 GMC Sierra
Failed emissions -- OBD Connector Integrity - Fail ; Malfunction Indicator Light (MIL) Status - No Voltage Fail
Posted by Anonymous on
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Posted on Jan 02, 2017
the fuse is located in the underhood fuse block. if you remove the cover & turn it over there is a diagram that tells you which fuse is for what.
Posted on Jul 07, 2009
Take the front axle actuator out of the axle. Plug it back in and have some one push the 4x4 button. The actuator should move, it's a liniar motor. If it doesn't then the actuator is bad or there is a wiring problem. If it does there is a problem in your front diff or some where else in the system.
I'd take a guess and say it's the front actuator.
Posted on Oct 11, 2009
Check coolant level. Check for heat at the heater hose going from water pump to heater core at firewall. Check to see that cable is moving coolant control valve from the closed to open position. Low mileage so it shouldn't be plugged heater core.
Posted on Jan 07, 2010
Testimonial: "You were absolutely correct. Low coolant level. Put in some 50/50 and we're nice and toasty now, but need to find out why coolant was so low. Thanks."
you will need a wiring diagram to find problem, first make sure the power feed circuit is good, use a test light or volt meter will be better, some times cigarette lighter circuit and o.b.d.II feed share same circuit. also look at signal circuit. it should b between 5*7 volts.
Posted on Jan 24, 2011
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