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V8-6.0L

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Check engine
Hi there. What was the stored code? The freeze frame data? Current data? What were the diagnostic steps taken to determine that the intake manifold gasket has failed? Questions like this is what I ask myself when a diagnosis is...
Question
Don't know if the transmission went out.
A large transmission leak like one from a cooler pipe or a leaking transmission pan can cause the transmission to slip if the level gets low enough. Trying to drive the vehicle while the transmission is slipping does not help,...
Question
Rpm's started to rise to around 1400 when idling and a dash message lit up saying reduce engine power.
Hi there. Check the idle air control valve (IAC) on your vehicle. This valve is what controls the idle and is most likely stuck or has failed. When turning off the vehicle and then turning it back on, the valve...
Question
Check engine light flashing at hwy speed
Have a certified technician start off by scanning the system for fault codes. When the check engine light is on faults will be stored in the system. These faults will give the technician a direction to take do diagnose the...
Question
My 4WD is not engaging. Is a 2007 Silverado have electronically controlled axle actuator or vacuum? Or is my problem in the hubs?
Hi there. The actuator on your 4WD system to your vehicle is electronic. Most of the Silverado 2500 model Chevrolet trucks have issues with the actuator failing in the front axle due to weather and road conditions. Check the harness...
Question
What would cause the motor not to crank and the dash lights to stay on? 2005 Chevy Silverado 2500
Hi - check fuses first, then check the engine wiring harness, especially the starter wiring, for correct re-connection. The behavior suggests either no engine-to-chassis ground, or incorrect wiring. Either or both appear to be "back-feeding" 12 volts to the dash...
Question
How to disable passenger airbag in work van?
It's always advisable to transport small children in the back seat. However, if your van does not have back seats, there should be an airbag off switch located on the passenger side of the dash. The vehicle key must be...
Question
Slight smell of gas or oil and poorer mpg fuel efficiency
This may be a result of a faulty oxygen sensor. As you may know the oxygen sensors which are part of your emissions system read exhaust gases to determine whether or not the appropriate amount of oxygen is present in...
Question
Where do i fill up the radiator on a H2 Hummer 2006
Coolant on your vehicle should be added to the reservoir that is located on the passenger side of the engine compartment. It will have a cap on top, that can be removed when the engine is cool, and allow for...
Question
Heater is blowing cold air truck is overheating and now I reduced power engine power light is on
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
Occasionally see "service charging system" on the DIC. What might be the problem?
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you know, if the belt is loose and enough torque is supplied, this may cause the belt to slip slightly causing the alternator...
Question
Truck sounds very loud when I step on gas...maybe muffler? 2007 GMC Yukon
Hello - this new, louder sound level could be the muffler, catalytic converter, an exhaust gasket or one of the connecting exhaust pipe(s). I would recommend having an exhaust system inspection by a mobile, professional mechanic, such as one from...
Question
Transmission stuck in gear in Drive 2007 Chevrolet Silverado 2500
Hi there - it's possible that your problem source is the torque converter lockup clutch NOT releasing as the truck slows down. This would lug the engine as though it's in top gear until vibration, or an engine stop/start sequence...
Question
how long does it take to replace the fuel pump
The labor to replace the in tank fuel pump and the inline fuel filter that should be replaced with the fuel pump will take 4 to 5 hours labor.
Question
Having heater problems
Hello - this problem seems to have multiple problem sources. Whether it was the first failure or the second, the fan motor resistor pack is probably fried - given only the "max" fan speed works, and needs to be replaced....
Question
I have the abs light on and know it was one of the sensors bad. I pulle dthe fuse to the ABS so it wouldn't affect when my daughte
Hi there: I would strongly recommend that you reinsert the fuse that operates the ABS control module. A warning light typically indicates that a sensor is faulty, however, removing power from the module will disable the system; designed and mandated...
Question
My high beam light does not work on left side. I don't think it is the bulb.
Hi there. There could be an issue with the high beam switch. Check to make sure that the wires are connected correctly to the high beam switch. Also, check the bulb in the high beam on the left side. See...
Question
Need to know the backlash specifications for a 2006 Denali transfer case.
Hi there. On most applications that deal with gear lash or known as backlash there is very low amounts of lash to prevent damage to the gears but also allowing the metal to expand. For your transfer case, set the...
Question
My speedometer does not work and my fuel guage is telling that I'm getting 2.3 mpg.
Hi there: In most cases, the issues with the speedometer and fuel gauge are related; since they receive data and input from similar sources. It could be a problem with an electrical relay from the ECU to the speedometer, a...
Question
shaking like it's going to fall apart
Hi there: Sometimes loose tie rod ends or worn out ball joints can cause the symptoms you're describing; especially on bumpy roads. It's often an indicator of loose components if the symptoms are only noticeable at higher speeds and while...

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