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L5-3.5L

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reduced power and a question with the throttle body.
You got a loss of power due to a fault with the system closing the throttle as a built in safety factor. The reduced power indicator is telling you that it went in to a failure mode and caused the...
Question
Truck overheating
Check to see if the cooling fan clutch is fully engaging when the engine is heating up. You can test this by putting a tissue in front of the radiator or condenser to see if the fan flow is strong...
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Temp. Gauge rises when I'm stopped or idling and when I run the AC but not when I'm moving.
If you are getting overheating only at lower engine speeds with no obvious reasons, then you will need to check if there is good flow through the radiator using a laser temperature sensor. By doing this you will be able...
Question
Sunroof leaking
If the dealership cannot open the sunroof, then the entire sunroof assembly may be in need of replacement. With this vehicle no longer in production, the parts may not be available. The entire interior roof panel should be removed to...
Question
I was just told my rear differential pinion seal was leaking when I got an oil change.
There is a seal that sits in between the two halves of your differential housing which keeps the oil inside of this housing from leaking. The oil inside the differential housing keeps the pinion gears lubricated. It depends on how...
Question
MAP sensor
Hello. MAP stands for manifold absolute pressure. So the answer to your question would be that it is the manifold absolute pressure sensor that there is something wrong with. The map sensor reads the pressure in the manifold and sends...
Question
Heater/air won't turn on
Try checking the relay. Sometimes when the relay is not getting a good connection this can happen. I would also check all of the fuses. Sometimes when they have too heavy of a load they will blow which will in...
Question
Every 3-4 months, my car won't start. It does turn over though.
If your battery is weak or has bad connections to the battery, then you may have problems starting the vehicle intermittently. This is due to low voltage to the starter which is taking all the power, while the electronic ignition...
Question
I need to know the diagnostic procedure for dtc p0717. Want to test wires before taking out transmission
If the sensor only has two wires, it is a reluctant AC sensor. If the sensor has three wires then it is a hall effect DC sensor. A two wire sensor will produce a sine wave signal: '()(-)()(-)(_)' or steady...
Question
I like this truck but wonder what you think about the Chevy Colorado
Hello. Consumer reports can vary greatly across websites and critics. If the truck is in good condition, and was well maintained then it will likely last you a long time, assuming you keep up the maintenance. I would recommend a...
Question
I have a Chevy Colorado. DTC P0717. No input from trans input speed sensor. Need to know the circuit test procedure and sensor rep
Hello, I have provided a link below that will help you with your issue, if you click here
Question
Car turns over but won't start
Hi, thanks for writing in. If, during a "no start" session, waiting slightly more than 10 minutes allows you to successfully start your H3, the problem is not with the fuel system. A failure of the ignition switch (an internal...
Question
Engine Oil
It is a bit unclear what the question is but assuming you are looking for an oil recommendation, it would depend on the driving habits and conditions the truck is subjected to. Since it has been 28k miles since the...
Question
Part fell from above brake/gas pedals.
The part is not a Chevrolet part but an aftermarket alarm system that was installed on the truck. Most of the time the part is just stuffed up inside the dash or wire tied to anything underneath the dash to...
Question
Why is my truck running hot? Where is my coolant going?
When a vehicle overheats when at a stop, this is a sign that the cooling fan on the front of the motor is not pulling enough air through the radiator. Of course, if you are loosing coolant, this can cause...
Question
door lock problem
Hi there: Based on your question and the information listed, it's possible that you've got an exposed wire somewhere in your vehicle that is causing a short with your door locking mechanism. Sometimes this issue is caused by a faulty...
Question
The power locks are not working on three of the doors
As unlikely as it may be, you could have three failed door motors; it has happened to me in the past. However, fuses, relays, a master switch, or the BCM could also be at fault. Check all fuses/relays and replace...
Question
door lock problem
Hello. There is a computer that controls the door locks and the warning light that you see. It is known as the Body Control Module. Something has likely gone wrong with this module, which may or may not be repairable....
Question
whinning noise
Hi there. In most cases, when the engine makes a whining noise that increases as your vehicle accelerates, it's caused by a drive, serpentine or alternator belt or the belt's pulleys. It's possible that your serpentine belt was replaced that...
Question
whining/grinding under truck as well as intense vibration throughout whole truck when driving over 80km/h
Hi there. It does sound like failing U-joints. They may simply be worn out due to age/mileage or have run out of lubrication and are now damaged. The driveshaft shouldn't be damaged from worn joints, but if they fail completely...

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