Skip the auto shop - Our mechanics make house calls

Q: I have an automatic but also has the 6 speed manual. When I'm towing my 4000lb camper the truck RPMs at 2800 and only 100m/h

asked by on

When I'm towing my 4000lb camper the truck RPMs at 2800 and only going100m/ph. When i'm using the manual shift mode it's shifting into 6th or if it is...the RPM doesn't change. (when i'm using manual with out towing it shifts into 6th fine and 1500 RPM at 100m/ph). Using the tow button with to without doesn't make a difference. I tried just leaving it in manual mode it didn't change the RPMs. Is this normal for a Silverado F150 LTZ 4X4 ?

My car has 111000 miles.
My car has an automatic transmission.

When a truck is towing a trailer or a fifth wheel, the engine will need to be producing maximum torque. The highest gear in most transmissions is the overdrive gear. The lowest gear typically produces the most torque from the engine and produces less and less as the shifts move up.

The overdrive gear means that the wheels RPM is actually higher than the RPM of the engine. This type of gear is not preferred when towing as it can do damage to the transmission. Due to this fact, Chevrolet has likely disabled the overdrive gear when towing a trailer.

If you suspect an issue, have the shifting issue diagnosed firsthand by certified technician, like one from YourMechanic.

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!
  • Home
  • Questions
  • I have an automatic but also has the 6 speed manual. When I'm towing my 4000lb camper the truck RPMs at 2800 and only 100m/h

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: Can I drive my car with a bad radiator fan clutch?

The fan clutch only comes into play when the vehicle is not moving. If the clutch is not engaging, causing the fan to not spin, then you will be fine as long at the vehicle is moving. If the vehicle...

Q: Truck making loud gear noise when driving

This type of noise is typical of a bad hub bearing. When you turn left, you put more pressure on the right tire stressing the already bad bearing. This is why the noise seems to get louder. Bad hub bearings...

Q: I have a 1999 chevy silverado 1500 ls v8 5.3 liter what is my amperage on my altinator?

If you still have the original alternator installed, look at the numbers on the alternator. If you see a "K68" label (or part number 321-2104) you have a 105 amp alternator. If you see a "KG8" designation (or part number...

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...
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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...