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Van shaking and misfiring.
Hello, a P0300 is a general misfire code without pointing to any one cylinder. There should be more codes present indicating which cylinder(s) have a misfire condition. You are correct in stating that a misfire is a combustion concern. To...
Key stuck in ignition switch
I believe the part you might be referring to is not the ignition switch but rather the lock cylinder. The ignition switch as an actual electronic switch located further down the steering column on your vehicle. The lock cylinder is...
Leaking water pump
Hello. It is common for the water pump to randomly fail on this engine. If it is leaking then it needs to be replaced. I typically start by replacing the pump and then doing a cooling system pressure test to...
My passenger headlight keeps going out, then tap it and comes back on?
Hello. This sounds like the bulb filament in the glass is intermittently loose or the plug connection to the back of the bulb is loose, corroded, broken, or intermittent. If the bulbs are many years old, they have probably lost...
low brake pedal
Hi there. If the brake master is leaking, then it needs to be replaced. You do not need to replace the brake booster unless the brake fluid has leaked into the booster. Lastly, the brake light switch should be checked...
The problem may be with the speedometer itself or the speed sensor. The vehicle should be scanned and road tested to see what the speed sensor is inputting to the computer. If the sensor is at fault then it will...
The engine is making rattling very high noise when you start the engine and constant.
The fact that the oil pressure drops when slowing down or stopping would suggest that the oil pressure is lower at lower engine RPM's. This means that the oil level volume is low. The oil capacity in an engine is...
Bluetooth works engine off
Hello. EMI (electromagnetic interference) is electromagnetic energy that is passed through electronic devices. EMI is disruptive and can affect bluetooth devices and/or your GMC Safari's electronic system if not properly shielded. This is not a common problem, but it is...
Car dies two miles
Hello. It is possible that there is an issue with your 2005 GMC Safari's alternator in that it may not be charging properly. This normally leads to the battery dying, which will prevent the engine from starting. Another possibility is...
Idles high without accelerating
Hello. Thanks for writing in about your 2002 GMC Safari. There are several components that may be causing this problem. There could be a bad throttle position sensor, a throttle cable that is sticking, or a vacuum leak. All of...
Take Off Squirrel Cage
Hello. Before attempting to remove the clip, I would contact your local dealer to find out if they keep that clip in stock, so you can replace it in the event that it breaks while you are trying to remove...
Won't Start in rain
Hello. It sounds like moisture may be causing the camshaft sensor or crankshaft sensor to give an improper reading of engine timing. The camshaft sensor and crankshaft sensor read the timing of each respective shaft. If one or both of...
Van will turn over but not start
You should have a technician inspect the vehicle as to why it is not starting. Disconnecting the battery while the vehicle is running to check the charging system on late model cars is not advisable. Electronic control units like the...
Idler pulley for surpentene belt fell off
Hello. If the bolt is gone then it either broke or loosened. If it simply fell out then the bracket is fine. I usually check the bracket hole to make sure that the threads are still there. If the threads...
AC compressor clutch disengages after a half hour, then won't come on again until the next day.
The low pressure cut off switch is on or near the accumulator. The high pressure or compressor cut out is on the back of the compressor or in the high pressure line near the condenser line connection. You may want...
abs light on brake line broke have been replace I bleed brake line but brake pad still go to the floor now wheels lock up
Hello. If the brake pedal is going to the floor then that means that it is not building pressure. If the brake system has been fully bled and there is no air in it then most of the time it...

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