268 points
I am a Master ASE Certified Technician with L1 Enhanced Drivability Certification. I have been Certified since 1987.
Recent Activity

Question Answered: how do i replace brake pads
January 20, 2011, 03:31 PM
If you are asking these questions you should probably refer to the professionals. This vehicle is equipped with special wear indicators and ABS sensors and brake fluid contamination sensor all of which require special procedures for service. It will cost you alot less to have it done than to do it incorrectly or damage one of the systems or components.
Question Answered: Ignition Lock and Cylinder
January 20, 2011, 03:28 PM
This job varies depending upon the vehicles systems and options. You will probably pay around $400.00 plus posible reprogramming of the body control module. Contact your local shop for a complete estimate based on vin number and options.
Question Answered: the front end squeaks going over dip in road
January 20, 2011, 03:26 PM
This model is notorious for lower ball joints going out and squeaking because they are not equipped from the factory with grease zerts. Replacemnet of the ball joint is usually required with a MOOG part or other that has a grease fitting that allows it to be serviced regularly.
Question Answered: Replacing Air Filter
January 20, 2011, 02:59 PM
There should be ibnstructions in your owners manual but your local mechanic will probably be happy to replace it for a minimal or even no charge.
Question Answered: oil in air filter
January 20, 2011, 02:58 PM
It sounds like the p.c.v. (positive crankcase ventilation) valve is not working. I would replace this and clean it up & see what happens.
Question Answered: oil pressure stays @80lpsi..where is the sensor located?
January 20, 2011, 02:56 PM
Most likely it is the oil pressure sensor that is bad. It should be located directly above the oil filter or possibly on the back of the engine block between the heads and behind the intake manifold.
Question Answered: changing turn signal bulb on drivers side
January 20, 2011, 02:54 PM
You must remove the entire front bumper cover & facia in order to remove the headlight lens and gain access to replace the bulb.
Question Answered: replacing heads
January 20, 2011, 02:53 PM
Absolutely! It is 100% necessary to flush your engine as any amount of water will destroy the copper/brass bearings (rod, main & cam) and will develop into an engine knock. We highly recommend the BG products. They have an engine oil flush with an addative for additional protection.
Question Answered: The heater doesnt work
January 20, 2011, 02:50 PM
There is a blend door that controls the direction of air through the das either through the evaporator core for a/c or heater core for heat. This is usually connected to the controls via a cable. The cable is broken so he just manipulated it manually.
Question Answered: Engine Misfire Code P0303
January 20, 2011, 02:49 PM
Your Sierra also has a dedicated ignition coil and ignition wire associated with each cylinder. These need to be tested to see if the are operating properly. If they are you must then check your fuel system for proper pressure and your fuel injectors for proper operation. You could wast alot of time & money changing parts but I recommend having it checked out professionally.
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