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Suburban 1500

If these codes, and the reduced power, occurred immediately after the throttle body service, the throttle position sensor outputs should be confirmed. You may see a yellow wire from the throttle body. That wire has been reported to often develop...

I would not recommend driving your truck under these conditions to prevent transmission damage. My first recommendation would be to have your transmission system inspected by an automotive service professional to locate the source of the leak (https://www.yourmechanic.com/services/transmission-fluid-is-leaking-inspection). Possible leak...

Different than the Check Engine Light, the Service Engine Light is typically triggered when a predetermined service interval has been reached. There are dozens of service schedules that could be coming up including oil (https://www.yourmechanic.com/services/change-oil-and-filter), transmission, battery (https://www.yourmechanic.com/services/service-battery-cables), ignition system...

Hi There, A misfire can be caused by many different things other than faulty spark plugs and can develop for a variety of reasons. Generally a misfire will fall into one or both of two categories: Fuel and/or spark. Spark...

This is a pretty common issue for your vehicle. The most likely cause of your concern is a bad shifter motor for your transfer case. Other common failures are of the transfer case control module and the actual switch that...

Hi Jasmine. Thanks for contacting us today. In most cases, this error message is activated when there is a failure of the rear door sensor. Sometimes an exposed electrical wire that is connected to the sensor can cause this to...

A bad fuel pump is only one of many reasons why a truck might not start. The way to test a fuel pump is to put a pressure gauge on the fuel rail and measure the fuel pressure and volume....

You did not mention replacing the leaking component like the caliper? If you had a leak there then replace the leaking component and then bleed the brakes to see if pedal will pump up? If it still goes to floor...

If you just replaced the battery and still have no electrical power to anything on the vehicle I would first suggest you try and get a jump start to see if the battery you got is bad or low on...

If you have white smoke out of the exhaust and are not getting low on coolant then you may have a cylinder that is low on compression or not firing. Have the misfiring cylinder compression checked on that side of...

The fuel system pressure should be checked to see if it is within specifications to start the vehicle and open the injectors. If the pressure is too low or no pressure then check the fuel pump connector and if it...

Hello. C0327 is the trouble code for a malfunction with the transfer case encoder motor as you alluded. This is the electric motor that allows the transfer case to engage into 4wd mode. This code is commonly caused by water...

Code P0120 (https://www.yourmechanic.com/article/p0120-obd-ii-trouble-code-tps-a-circuit-malfunction-by-jay-safford) relates to the throttle position sensor and can be caused by the following: Sticking throttle return spring MAP or TPS connector corrosion Misrouted harness causing chafing Bad TPS Bad PCM Code P0220 (https://www.yourmechanic.com/article/p0220-obd-ii-trouble-code-throttle-pedal-position-sensor-switch-circuit-b-malfunction-by-andrew-quinn) relates to the throttle...

Hello there. I suggest having the pressure checked with a fuel pressure tool. That will help you know for sure if the pump is or isn't at fault. If you need further assistance, I recommend you have a mechanic, like...

If the blower motor is not turning, the cause is identified during a failed heater diagnostic (https://www.yourmechanic.com/services/heater-is-not-working-inspection). Blower motors failures are due to faults in the wiring, fuse, relay (https://www.yourmechanic.com/services/blower-motor-relay-replacement), control switch (https://www.yourmechanic.com/services/blower-motor-switch-replacement), resistor block (https://www.yourmechanic.com/services/heater-blower-motor-resistor-replacement), if so equipped, and...

The vehicle calls for synthetic oil that provides better protection and should be on your oil cap indicating the proper weights and the brand should not matter as long as it meets GM standards on the oil cap or in...

Hi Shan. Thanks for contacting us today. To be honest, this is a very weird issue you're describing. In most cases, however, these problems are often caused by a faulty speed or wheel sensor, that sends false data to the...

With the thermostat installed, if the coolant temperature, as measured at the sensor in the engine head/block, is in the range of 195 to 220 degrees Fahrenheit, the car is not overheating. Coolant temperature can be read off of an...

The issue with the selector switch is likely electrical in nature. It can be diagnosed along with the non functioning from a/c system problem. Hot air in the front, when you have functioning a/c in the rear, could be due...

Hi there. The grinding sound may be coming from a rear output shaft. In most cases, the transmission yoke or output shaft will wear out over time, or when the inner seal has broken. The grinding is typically due to...