SUV, GMC Envoy, 2004, vehicle has no get up and go! Not s...

Q: SUV, GMC Envoy, 2004, vehicle has no get up and go! Not shifting into gear! Already changed transmission fluid and spark plugs!

asked by on January 10, 2018

Engine or transmission has no get up and go! We changed the plugs and transmission fluid but it's acting like it doesn't want to get higher than 40mph! It's sluggish and it fights to get into gear. All the while the rpms, rise to 4, then finally connects into gear!

My car has 137000 miles.
My car has an automatic transmission.

If engine speed increases steadily in response to accelerator inputs, then this is probably a transmission related fault. To give you a precise slate of possibilities though I would need to know exactly which gears (which "shift points") are "missing" and/or experiencing delayed shifting. Generally, there are electrical causes of what you describe plus lots of mechanical possibilities. These range from a vehicle speed sensor in the transmission, line pressure sensor, valve body or shift solenoid fault, hydraulic circuit/clutch pack fault and so forth. Sometimes a faulty throttle position sensor will cause these symptoms. There can also be multiple causes of course. An advanced automotive scanner is typically used to read transmission operating data and that aids in the diagnostic. If you want such a diagnostic, please request service using YourMechanic’s loss of power inspection/diagnostic service request page and the responding certified mechanic will get this resolved for you, right at your location. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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

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

What is the best tire for towing and light off-road use?

I personally run General Grabber AT2's, and I love them. I have a Tacoma, and don't do much towing, but they are LT rated and have a thick sidewall. The most popular all terrain tire is the BF Goodrich All...

Engine die when get hot

If your engine is shutting off when it gets hot it is possible that it could be overheating. Many vehicles have a feature built into the engine that will kill the engine if it reaches a certain temperature. For an...

When I put the car in gear, it doesn't move.

It sounds like you have broken a CV joint. The CV joints are a ball and groove joint that make it possible to transmit power to the front wheels even while you steer the wheels. They make a nasty popping...

Related articles

A Buyer’s Guide to the 2012 GMC Canyon
In In today’s world where it seems as if carmakers are determined to deliver only the largest vehicles possible, the 2012 GMC Canyon offers a compact pickup that holds its own. From a 4-cylinder that offers more horsepower than other...
2012 GMC Acadia vs. 2012 Dodge Journey: Which One Should I Buy?
The GMC Acadia is classed as a midsize SUV, which is able to seat between six and seven passengers comfortably. The 2012 Acadia offers three rows of seating, so passengers will feel the roominess that is typical in a true...
How to Get GMC Dealership Certified
GMC car dealerships offer automotive technician jobs to mechanics who are certified through one of the many programs they have available.