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.

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

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: doesn't move when i put it in reverse but then i put it in 4 low then reverse and it slips but it moves.

You have the Chrysler 46RE transmission. Among the possible causes of what you describe is a rear servo piston that is sticking or broken, pin bore wear and/or the reverse band is slipping. The servo piston on the 46RE has...

Q: Fuel pump module failure, 2014 Chevy Suburban

Hi there: Let me answer your questions in order: 1) A fuel pump module is an electrical component, so in theory it should last the life of the vehicle. However, it's common for this part to war out sooner than...

Q: Valve cover and misfiring cylinders on 6 and 7 (needs a tuneup) 2011 Chevy Silverado 1500

Hello - yes, oil leaks onto the plugs, or onto the coil boot over the plug, will cause misfires and poor running. I would recommend a valve cover gasket replacement by a mobile, professional mechanic, such as one from YourMechanic,...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.