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Related questions

Question
Parking brake loose - 1993 Chevrolet C2500 Suburban
Hello. Over time, the parking brake cable can become loose. I usually start by adjusting the rear brakes because the rear drum brakes being loose will affect the operation of the parking brake. If the rear brakes are adjusted, then...
Question
Fuel pump always running - 1995 Chevrolet K2500 Suburban
Your fuel pump relay is only used to power the fuel pump at startup. After the engine starts, the fuel pump receives power from the engine oil pressure switch on the lower left side of the engine. When fuel pump...
Question
Blinker light malfunction - 1998 Chevrolet Suburban 2500
Hello. Most of the time this is caused by a short in the combination switch. It shorts internally and allows this circuit to get power when it is not supposed to. I also have seen issues with the trailer wiring...
Question
Check gauges light is on and car won't start - 1990 Chevrolet C2500 Suburban
Hello. Most of the time, the symptoms you are describing are caused by the battery failing. If there is a bad connection at the battery or if the voltage in the battery is low, then this will occur. If the...
Question
Sudden RPM drop - 1996 Chevrolet C2500 Suburban
Hello. This is usually caused by a failing throttle body. Over time the throttle plate will wear into the throttle body bore causing it to hang up and not release as it should. I usually check the throttle body for...
Question
Whistling noise over 40mph, car downshifts hard - 1996 Chevrolet K2500 Suburban
The transmission on these vehicles have many different possible problems and it sounds like you have an overrunning clutch bearing that is bad, which is causing it to make noise after 40mph. The problem downshifting may also be due to...
Question
Car idle is high - 1994 Chevrolet C2500 Suburban
Hello. It sounds like you have a serious vacuum leak or a fuel pressure regulator leak. I would check all of the hoses for signs of leakage and also the intake manifold gasket. The intake gasket is the most common...
Question
Ocassioanl stalling at idle, RPMs fluctuate at idle - 1995 Chevrolet K2500 Suburban
You either have a leaking injector that is dripping fuel after you shut off the engine and causing a flooded engine and will cause the hard start and erratic running conditions. You could also have a fuel pressure regulator or...
Question
After repairs, SUV stalls after deceleration and idles
Using a scan tool to access any stored diagnostic trouble codes (DTCs) may give you some direction on this. I recommend cleaning the throttle body. TAC (throttle actuator control) or drive-by-wire throttles are very sensitive to dirty throttle bodies. You...
Question
Torque converter goes in/out of lock up at cruising speed
Thanks for writing in about your 1999 Chevrolet Suburban. There are DTCs (diagnostic trouble codes) that will indicate faults with TCC solenoid and brake pedal switch circuits. A scan tool can be used to observe brake pedal switch position while...
Question
Truck started in neutral once, now it won't start at all
This is just a guess, but the problem could be with the gear selector or the transmission position switch. The starter relay will not close and the vehicle will not crank, unless the switch is in the neutral or park...
Question
Temperature gauge in the red zone
The normal operating range for most engines is between 195 degrees and 220 degrees Fahrenheit. If your engine is getting hotter than this, it's running too hot. Do not continue to drive it until it is properly repaired. Overheating can...
Question
Truck makes whining noises
You are correct to suspect the differential. Other parts of the undercarriage, such as the tires and wheel bearings, usually result in a noise that persists during both acceleration and deceleration. Whining and howling noises are usually related to the...
Question
Truck idles poorly, starts jumping
There are numerous potential causes for the symptoms you are having. The first thing that comes to mind is a vacuum leak (unmetered air allowing the engine). Vacuum leaks are noticeable at idle and not under load while accelerating. There...
Question
Grinding noise and backfiring during startup
The starter on this vehicle requires a shim, so its possible that got left out when the starter was replaced. This could cause starter engagement problems and the metal on metal noise you're hearing. Backfiring, on the other hand, is...
Question
Reduced engine power warning on, power loss, RPM decrease - 2005 Chevrolet Suburban
It is possible there is an issue in the electronic throttle control system. Faults need to be read out of the engine computer to determine if this is the case. Accelerator pedal position sensor, throttle position sensor, or throttle motor...
Question
Turn signals do not work correctly - 2004 Chevrolet Suburban
This could be an issue with the turn signal/flasher module located in the left I/P fuse box. The output of this assembly should be checked. Also the rear turn signals are hooked up in a rear junction block that also...
Question
ABS light on, rattling sound coming from the engine - 2005 Chevrolet Suburban
Due to this being a possible safety concern you will want to have this issue looked at as soon as possible. GM has several TSB's out for various ABS and stability system issues. All of these TSB's do have specific...
Question
Gear independently shifted into neutral - 2005 Chevrolet Suburban
This sounds like it could be a transmission control issue. Faults codes should be read out and any issues corrected. Generally, if there is a mechanical condition in a transmission the symptoms will be static and always present where an...
Question
Service front camera message!
Hi there: In most cases, this message appears in the driver information center (DIC). When the DIC displays this message, then the front camera is malfunctioning, and the lane departure warning (LDW) and forward collision alert (FCA) systems will be...

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