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Suburban 1500

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Question
When I start my car it cranks the 1st time and then 2nd round starts /new Battery/.it also pour acceleration after stop at light.
Hello. Hard starts and poor acceleration are typically caused by air, fuel, or spark. You are going to want to look into some of these systems a bit further. You can start with the spark plugs and ignition system. When...
Question
My truck turns over but stops turning over by itself and won't start back up.
Hi there. Sounds like you have a starter motor that is failing. When the starter relay gets hot, it will overload the ignition circuit and shut off when cranking. Check the battery cables to the solenoid on the starter and...
Question
rpm drops to idle at highway speeds, pull over and restart.
Hello. There is simply no way of knowing without being able to perform some tests, and ask some further questions. When this happens, do any warning lights come on? Even if they don't, have the vehicle scanned for diagnostic troubleshooting...
Question
The traction control is on.
Hi there: If the “Traction Control System (TCS)" Warning Indicator Light is on in the dashboard all the time; it's an indication that the TCS is not working correctly or has been shut off manually. The traction control system helps...
Question
Engine seizes - 2008 Chevrolet Suburban 2500
Hi and thanks for contacting YourMechanic. If the mechanic said that there is no compression in the engine, then there could be 2 things wrong. Either the engine has all of the valves or rings burned or broken, or the...
Question
It is making a roaring noise.
Hi there. That's a very good question; however, we need a bit more information in order to give you an accurate idea as to what's causing this roaring sound. If the roaring sound is coming during acceleration, it could be...
Question
No crank no start no shift. AC blower and cruise control not working. All dash lights on. Can jump 12v to crank fuse and start
Hi there. I think you are on the right track. If you have good fuses both under the hood, and at the internal fuse panel, but don't have 12 volt "supply" voltage to the fuses, there is quite likely a...
Question
Wanting to put dual tanks on it
Hi there. You could pin in the second fuel tank's fuel pump and have the pump work. First, check the pins for power to them on the main fuel tank and see what the voltage is and how the voltage...
Question
Dual air control blows very hot on passenger side and warm on driver's side. Replaced the actuator with n/o change. Ideas?
Hi there. It would appear that your vehicle has a combination of problems with the HVAC (heating, ventilation, air conditioning) system. Your vehicle having dual zone climate control means there are two temperature blend door actuators. Replacing components without...
Question
truck stalled while pumping gas
You most likely have a leaking fuel tank vapor control valve causing the hard start after refueling. The purge valve is supposed to seal the fuel vapor from flowing except when the vehicle is in a highway cruise situation. It...
Question
question- can i install something after?
Yes, both a navigation system and a back up camera can be installed after the fact. I would recommend researching the various options and brands online as there are many different options for this. You will want to have this...
Question
My actuator works backwards
Hello. We will need to observe several other factors in order to pinpoint what the issue is. When you say you are turning on the vents, what setting are you turning on when this happens? Is it all temperature settings...
Question
Check Engine Light on code P3400 showing
Hello. This particular code indicates a performance issue with the cylinder deactivation system on bank 1. If you believe that all of the recent repairs are holding, then you may want to turn your attention the the solenoid and sensor...
Question
Diagnose bad water pump
Generally, when a water pump is going bad, you may hear a bit of a whining sound combined with the pump leaking. The most common place for the water pump to leak from is the pulley shaft seal which is...
Question
Temperate gauge is reading high but the truck is not hot
This suggests that you may have a faulty or incorrectly wired temperature sensor or gauge. I would recommend having an expert mechanic, such as one from YourMechanic, come to your location to determine exactly what the problem is and replace...
Question
U-joint vibration
Worn U-joints installed on a well balanced driveshaft will cause vibration and noise as the whole assembly slaps around while rotating at high speed. However, the cause of the changing amount of vibration during coasting versus acceleration can only be...
Question
I got 2 codes P0304 and p0102
Hi there: The OBD-II trouble code P-0304 indicates that cylinder four is misfiring or having ignition issues. The most common causes include a faulty spark plug, clogged fuel injectors, or even an intake valve leak. To know for certain, you...
Question
Sudden Reduced Power when running fine - stop, restart, all is fine - what's wrong?
Hi there - first thing to check when experiencing a Reduced Power Light condition is for any problem codes that might still remain, even if the Check Engine light is not on now. There are several possible causes - an...
Question
Poor charging after replacing alternator - why? 2007 ChevySuburban
Hi - I suspect the wavering voltage you describe is either the serpentine belt too loose (tensioner), or the voltage regulator on the new alternator is defective. If the serpentine belt tensioner is loose, it can slip-grab-slip-grab as you describe....
Question
Service stabilitrak and service traction control
Hello. The stability control and traction control warning lights can trigger for several reasons. The first step you will want to take will be to have the vehicle scanned for diagnostic troubleshooting codes. This will tell you what about the...

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