20 Most Recent 2009 GMC Sierra 3500HD Questions & Answers

Not likely. Usually abuse 4 wheeling or tranny bolts loose and diff.shifting around. You might have smacked something with it when driving whether on road or off road.

Have you replaced the actual switch panel mounted in the door? If everything else works directly with their own switches it could be the switches you use whilst driving.

sounds dumb but here in maryland people with older vehicles have problems passing emissions test. sometimes fresh oil change can help also possibly vehicle is in need of a tune up including plugs wire cap rotor pcv valve and fuel filter. one other thing could be the catalyst converter might not be cleaning to its full potential. hope this helps

The head light adjustment screws are at the back of the headlight under the hood.

Fuses shouldn't 'light up', fuses melt, lights light up. I am very confused. Some general help in the link. https://www.google.com/search?q=ctsy+fuse ..

Door switches or wiring.A scanner would help tracing the problem.

What is the torque for a 2007 Saturn ion wheel hub assembly

Question edited for clarity. You need a good auto electrican with a $5,000 pro grade scan tool computer to diagnose. Your issues are electrically caused, not mechanical. 'Local mechanics' don't buy the fancy scanners.

ABS sensor wiring became disconnected?

check fuse relay wiring and switch and if lighter kept blowing fix dont throw in bigger as you see could have burnt truck down

Called 'Limp Mode'. Connect to a code reader and it will tell you why.

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This means marker light, running light, brake light or blinker. In this case one of the wires will be ground (-) and the other is positive(+). Generally a white and a black wire will be provided. The white will normally be the ground(-) and the black will be the positive(+).

Wheel bearings and struts.

Check the radio instalation for the issue.

PERHAPS IT HAS A RELAY FOR THEM UNDER THE HOOD

Maybe vehicle speed sensor has a problem?

Nobody has a diagram. The smallest ones usually go in the cylinder head

I would start with the oil pressure sending unit. These can fail. Often replacing them will then have correct oil pressure readings. Oil filters (all of them) are designed to allow oil to flow through them or around the filter media if it's plugged thus not starving the engine of oil flow and pressure. So it is unlikely that is the problem.

Here is the door speaker wiring colors. Left Front Speaker Positive Wire (+): Tan Left Front Speaker Negative Wire (-): Gray Right Front Speaker Positive Wire (+): Light Green Right Front Speaker Negative Wire (-): Dark Green