Skip the auto shop - Our mechanics make house calls

Q: The transmission not getting the vehicle up to speed - 2006 GMC Savana 3500

asked by on

without warning the transmission would not accelerate the vehicle above 30-40 miles per hour and abpve that the engine revved and seemed to disconnected - slipping. Transmission fluid check indicated nothing on the dipstick - totally empty. No exernal leaks could be found and upon filling up a quart at a time the vehicle would attain a higher speed, add another quart and it would go a little faster. where did the fluid go and how can a tranny fail so quickly?

My car has 183000 miles.
My car has an automatic transmission.

Hello. You don’t state how quickly the fluid loss occurred, but finding this leak is obviously the number one priority. There are 3 common leak points on this transmission (4L80E): the rear transmission housing/driveshaft yoke seal, the filler tube, and the electrical connector going in to the transmission. If this happens quickly, the tailshaft/driveshaft seal is the most likely candidate.

I would recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine the source of the leak and suggest the repairs necessary to get your car back in proper working order.

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
  • Home
  • Questions
  • The transmission not getting the vehicle up to speed - 2006 GMC Savana 3500

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: ABS Module can not be reprogrammed

Hello. I would first contact the vendor who sold you the new ABS module. Reputable dealers and ABS module rebuilders are pretty good at guiding you through the "programming" aspect of this replacement. While there are some ABS modules that...

Q: Reverse gear wont work but other gears work.

Hello, thank you for writing in. Losing reverse can happen for a wide number of reasons. To simplify things, start with a full inspection. This will include checking the level and condition of the transmission fluid. If it is low...

Q: My car is pouring coolant out does a bad water pump pour coolant out

It can, but there are many parts of the cooling system that can do this. If it is the water pump, the coolant or water will be coming from the front of the motor and behind the timing cover. The...

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...
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...
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.