Q: Air Filter Replacement

I would recommend having a qualified professional come and perform a cooling system pressure test (https://www.yourmechanic.com/services/coolant-is-leaking-inspection) on your vehicle. There are many places on a vehicle where coolant can leak from, including the hoses, radiator, water pump, and heater core...

If I was diagnosing your Hummer, I would want to know if there were any diagnostic trouble codes (DTCs) stored in any of the computer modules. I would see if the Check Engine light was on and use my scan...

Your vehicle does not have a coolant sensor and uses the cylinder head temperature sensor (https://www.yourmechanic.com/services/cylinder-head-temperature-sensor-replacement) to do both jobs. The system uses this sensor to sense both the coolant and head temperature. If your vehicle fan is running all...

If the shifter has to moved around in order to get the engine to start, then this indicates either a faulty or misadjusted gear selection switch on the transmission. In order to prevent the vehicle from starting up in drive,...

Hello. If your center console and radio unit is no longer working after the battery is disconnected then it may be possible that a fuse (https://www.yourmechanic.com/services/fuse-replacement) has blown. I would check the vehicle's interior fuse box to see if any...

Normally, if there is a hydraulic leak that lets the brake pedal go to the floor, the condition remains until its repaired. with your brakes coming back as you describe, it's hard to say what occurred without knowing more of...

You may have a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle. Since...

Hello - the MAP sensor (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-manifold-absolute-pressure-sensor-map-sensor) is located on the intake manifold, near the back. It has a flat, 3-wire electrical connector. For assistance, I recommend a MAP sensor replacement service (https://www.yourmechanic.com/services/manifold-absolute-pressure-sensor-map-sensor-replacement) by a mobile, professional mechanic, such as one...

You can put just about any engine into your car but it will need to have modifications done to fit the engines. The 2000 through 2005 models have the same engine. I recommend putting in the same engine as what...