Skip the auto shop - Our mechanics make house calls

Q: Rough shift from 1st to 2nd.

asked by on

I have a 2002 silverado1500 5.3l automatic with 233,000 miles. Whenever it shifts from 1st to second it jerks in the rear wheels. As if the tires grab the road and spin at around at speeds of 20mph. Very annoying and confused of why it is doing this.

My car has 233000 miles.
My car has an automatic transmission.

A: Transmission problems can be confounding mo...

Transmission problems can be confounding mostly because the components are so inaccessible and there are so many of them. Although the transmission is generally thought to be the most complex "component" in a motor vehicle, in principle, it actually is pretty simple. In the transmission, sensors measuring speed and engine load actuate "shift change solenoids" and other valves (all in a large valve body bolted into the transmission) which redirect high pressure hydraulic fluid to pistons that force clutches to actuate.

First thing to check is the fluid level. If the fluid level is not correct (high or low), the hydraulics will not preform properly. If the fluid hasn't been replaced, there is a small chance that merely changing the fluid and the filter could improve the situation. If the filter is clogged, hydraulic pressures will be insufficient and can lead to delayed shifts. If fluid isn't the issue, it's likely that problem is the valve body (a faulty solenoid or a sticky valve), a damaged o-ring hydraulic seal in the transmission, or damaged piston.

In this case, rebuilding the transmission can possibly result in a better unit than what was originally supplied in the vehicle for the simple reason that since 2002, the parts like accumulators and valve body parts, have been re-engineered to solve all the known issues that have since been observed in the field. Before seeking out mechanic specialists to rebuild the transmission, I recommend having the vehicle diagnosed because a full transmission rebuild may not be necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: No bus

Hello and thank you for contacting YourMechanic. First check all of the fuses on the fuse box in the cab for any of them that could be blown out. Sometimes fuses can pop when hooking up a fully charged battery...

Q: ABS/brake lights on

Typically when a vehicle has the ABS light appear on, the brake light will appear right along with it. When this happens, the next step would be to use a automotive scanner to communicate with the ABS module. This will...

Q: Knock Sensor issue

The sensors are doing their job and telling you there is a knock in the engine. Even though it may seem like the sound went away, you may not be able to hear it when you drive but the sensors...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...