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V6-4.3L

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O2 sensor or EGR valve?
Hi There, There are a few situations that may cause the O2 sensor to produce a false reading. As you may know the [oxygen sensors]((https://www.yourmechanic.com/services/oxygen-sensor-replacement) which are part of your emissions system read exhaust gases to determine whether or not...
Question
oil leak
I can't really give you a positive yes or no answer as to whether stop-leak products will cure the problem. From experience however, I have seen them work for a time, I have seen them not work at all, and...
Question
how much should a dealer charge me to replace (labor only) door latch cable on a 2009 Silverado PU
Hello. It depends on which door cable is broken as to what it would cost. Most cables on this truck call for about 1.5-2 hours of labor. Depending on what the hourly rate is from the dealer would determine what...
Question
power steering no retrun
If you are having issues with your power steering system, I would recommend having your power steering pump, hoses, and gearbox inspected for proper function. If your power steering system has a leak, this can cause the systems performance to...
Question
car cranks but won't start
Knowing for sure that there is no fuel getting to the fuel rail does help narrow down the possibilities. You will first need to find out if the fuel pump is working. Does it activate when/if it is getting the...
Question
Windshield wipers working intermittently, & sometimes won't shutoff
If there is a switch malfunction, it's possible that such could explain both faults. If the problem is not in the switch, then there could be a bad relay in the circuit (if so equipped), loose fuse, bad ground, and/or...
Question
Engine has a misfire
There are a number of things that can cause poor fuel mileage, which may also cause it to misfire. A faulty camshaft position sensor is one of them. The camshaft position sensor is a magnetic sensor that monitors camshaft speed...
Question
Car does not start sometimes
Hello, This suggests you may have a faulty starter relay. The starter relay directs power from the battery to the starter solenoid which then engages the starter when you turn the key. When this is not working properly, you may...
Question
Why would my 01 chevy silverado make a loud poping noise when i put it in drive? It has the right amount of transmission fluid in
That sort of noise is usually due to a bad u-joint in the driveline (if you have the 4WD version), bad CV joints (often outer) and/or excess play in the transmission (end play) or differential (front or rear). If the...
Question
Can missing wheel studs affect 4wd?
In most situations, I can't think of a situation where missing wheel studs will prevent you from engaging the four wheel drive system. If a piece of a broken wheel stud falls behind the flange, it can cause the wheel...
Question
tbi injectors
If there is power to the injectors, and they make an audible clicking noise (that is, mechanically the injectors are functioning) measure the fuel system pressure and be sure that the pressure is within Factory Service Manual specifications. If pressure...
Question
What would cause my transmission to not shift
One cause to rule out is low fluid level or a plugged transmission fluid filter. Delayed shifts can also be caused by internal hydraulic leaks in the valve body or failing internal transmission seals found on clutch pack pistons and...
Question
I'm having some electrical problems with certain accessories on the car 1998 GMC Jimmy
Hello - no, this is not your ignition switch causing the problem. Something is going on here that's draining your battery. This problem can be diagnosed by connecting an ammeter to the positive (red) battery cable, observe the current drain...
Question
Can someone please tell me what electrical problems or ignition switch problems are going on with my 1998 GMC Jimmy
Hi - electrical problems that drain your battery overnight are not "acceptable" - a couple of weeks is more the standard, what with modern security systems. Something is going on here that's draining your battery. This problem can be diagnosed...
Question
Transmission will not go into gear when warmed up
Hello. From what you describe it would appear that your vehicle may be experiencing some sort of potentially serious transmission issue. If the transmission was having issues prior to mixing in the additive it may be possible that doing so...
Question
live in ohio had since 2004 never had trouble starting before wont start when its cold out
Hi there. It's possible that you've got a bad cold start injector on your Jimmy. The cold start injector, also referred to as the cold start valve, is an engine management component found on many road going vehicles. It’s purpose...
Question
Car ran out of gas - will not restart after adding more gas
You will need to check to see if the vehicle is flooded for excessive fumes from the filling of the fuel tank. The purge valve or the fuel tank vent valve is leaking fumes into the engine. You will need...
Question
Overheating and smoking
The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...
Question
car won't start and no fuel pressure at rail but great at the filter
If the pressure drop exists "through" the fuel filter, then the fuel filter should be replaced. If the pressure at the exit side of the fuel filter is normal and yet the pressure on the fuel rail is essentially zero,...
Question
Wont turn over.
Hi There, It sounds like you may have a bad wiring connection or potentially a faulty starter relay. The starter relay directs power from the battery to the starter solenoid which then engages the starter when you turn the key....

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