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Safari

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Question
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...
Question
Q: 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...
Question
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...
Question
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...
Question
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...
Question
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...
Question
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...
Question
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...
Question
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...
Question
Hard shifting from 1st to 2nd
Hi there. The problem with your transmission is the 1 to 2 shift accumulator has either a broken spring or a split o-ring on the piston. You can replace this very easily. Drop the pan and gasket. If you just...
Question
It's runs really bad upon start up, but if allowed to idle for 30-45 min it will run perfectly.
Hi there. What seems to be happening is your engine is being leaned out when running cold until the engine reaches operating temperature. Check the coolant temperature sensor or the engine temperature sensor. These sensors could have a fault in...
Question
My 98 gmc safari van will turn over but won't start replaced the starter and still doing it what can it be
Confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. If the immobilizer system is on, you may see a security warning light. If the warning light is on, to temporarily override the...
Question
1997 GMC Safari SLX 4.3L I Just install a coolant temp sending unit. now my motor wont start. but dose when unplug. what could be
The coolant temperature sensor sends a signal to the ECM to enrich the mixture when the engine is cold (cold engines need more fuel at initial start up), otherwise you will have hard starting or perhaps no starting. Something is...

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