Q: Hard clunk noise shifting/downshifting in 2nd & 3rd

asked by on

While driving and I am shifting from 2nd into 3rd gear, there is a hard clunk noise. This also happens when I am downshifting from 3rd down to 2nd gear. I went to the local dealer to have this fixed, but was told that this clunking noise is ‘normal’ for a 4WD truck. I have had many 4WD GMC vehicles in the past and none of them had this kind of shifting problem. What is causing this hard clunking noise so that I will know how to get it fixed?

Hello there, thank you for asking about your 2006 GMC Sierra 1500HD. Since you say it only happens when shifting between 2nd and 3rd, my guess is that the noise is internal to the transmission. A faulty shift solenoid could also be the problem, but then the Check Engine Light would likely be illuminated. The only way to know for certain is to have a professional listen to the noise firsthand. I suggest having a certified technician from YourMechanic come to your home or office to inspect the shifting noise and make any necessary repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Hard clunk noise shifting/downshifting in 2nd & 3rd

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: car starts fine but stuck in park wont shift

The first thing to check is to have someone look at your brake lights when you push the pedal. If you do not have brake lights, then the brake light switch is bad or one of the wires at its...

Q: Truck shakes violently while braking

This may be a sign of worn out or failing wheel bearings. When this happens, this can cause a vibration usually opposite the defective side. When this happens, commonly this is a result of metal on metal contact inside the...

Q: 2006 Honda Civic Dx won't accelerate over 20 mph...Checked codes says it's a misfire change plugs and found oil in well...Plz Help

To start you will need to replace the valve cover gasket and clean out all the oil out of the spark plug tubes. Then you will need to replace every coil boot that got oil on them. Once this is...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.