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.

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?
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. Rough shift from 1st to 2nd.

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: Transaxle makes a loud grinding noise when you accelerate

Of course, first check the fluid level to be sure it is not low but if you are already hearing significant noise, there is probably mechanical damage that will have to be repaired. The problem has to be evaluated during...

Q: Q: Engine

You should go with the same motor you had originally. If not you will run into fit problems and computer issues with the sensors after you try to start it. There will be less problems by going with same motor....

Q: How can you tell if you have an intake manifold leak verses blown head gasket ?

Due to condensation within the engine, whitish discoloration on the underside of the oil cap is not unusual. If the oil in the oil pan is not coolant contaminated, you need not worry. If you have an external coolant leak,...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.