Skip the auto shop - Our mechanics make house calls

Q: got a code for p1870

asked by on

rebuilt tranny 4 months ago now code is on should i take it back or should i change the tranny oil?also it does a weird pull around 10mph but not all the time

My car has 15600 miles.
My car has an automatic transmission.

A: These transmissions have problems with the ...

These transmissions have problems with the valve bodies wearing out internally. If the valve body was replaced in your transmission when it was rebuilt, I suggest bringing it back to that technician to have it inspected under warranty. If the valve body was not replaced, then I would have a qualified independent technician, such as one from YourMechanic, verify the diagnosis.

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: Coolant blowing out tailpipe

Hi there. A coolant leak on the these GM vehicles is common due to failures in core plugs. Core plugs are holes where block castings are filled from, and sealed to keep coolant in. I would have a certified mechanic...

Q: Will a duramax fit in my truck?

This is not a simple swap. There are several things that would have to be modified for this to work. The motor itself is an entirely different motor than the 5.3 Vortec that your truck would have come with and...

Q: SUV sounds like 2 pieces knocking together underneath

Hi there. There are a number of things that can cause this. The most common causes of noise under this vehicle are loose frame cross members or worn out shocks. If the springs are worn out then the control arm...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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.