GMC K1500 Engine hesitates during acceleration Inspection at your home or office.

Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM.

Estimate price near me

Service Location

Customer Ratings

(40)

How A Diagnostic Works

Instantly book a certified mobile mechanic to come to you

Mechanic diagnoses the problem and quotes necessary repairs

Your vehicle is ready to go

Fair, upfront & transparent pricing for all services

Our certified mobile mechanics can come to you now.

Customer Ratings

(40)

Engine hesitates during acceleration Inspection Service

How much does a Engine hesitates during acceleration Inspection cost?

On average, the cost for a GMC K1500 Engine hesitates during acceleration Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1988 GMC K1500V6-4.3LService typeEngine hesitates during acceleration InspectionEstimate$114.99Shop/Dealer Price$124.99 - $132.49
1988 GMC K1500V8-5.7LService typeEngine hesitates during acceleration InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
1980 GMC K1500V8-5.7LService typeEngine hesitates during acceleration InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
1989 GMC K1500V8-6.2L DieselService typeEngine hesitates during acceleration InspectionEstimate$94.99Shop/Dealer Price$104.99 - $112.48
1986 GMC K1500V8-5.7LService typeEngine hesitates during acceleration InspectionEstimate$94.99Shop/Dealer Price$105.02 - $112.55
1979 GMC K1500V8-6.6LService typeEngine hesitates during acceleration InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
1984 GMC K1500L6-4.1LService typeEngine hesitates during acceleration InspectionEstimate$99.99Shop/Dealer Price$109.87 - $117.28
1989 GMC K1500V8-5.0LService typeEngine hesitates during acceleration InspectionEstimate$99.99Shop/Dealer Price$110.24 - $117.94
Show example GMC K1500 Engine hesitates during acceleration Inspection prices

It can be frustrating for any driver to expect certain acceleration from their vehicle only to find that the vehicle seems to be hesitant while speeding up. This hesitation could be potentially dangerous in situations like entering and exiting the highway from an off-ramp, where acceleration may be necessary to merge with traffic. A vehicle that struggles or hesitates to accelerate may be unpredictable and moments of hesitation may be coupled with equally dangerous moments of surging or unexpected acceleration. When a vehicle is hesitating during acceleration, it should be inspected by a mechanic.

How this system works:

A vehicle with a combustion (gas or diesel) engine requires an exact mixture of fuel and air to run efficiently. If this mixture is thrown off in any way, it may result in an engine running too lean (not enough air), or too rich (not enough fuel). An engine that is hesitating to accelerate is most likely dealing with a fuel/air mixture that is too lean. Engine’s that are running inefficiently will begin to show signs like hesitation which will only become worse over time. If you notice some symptoms like hesitation, you should have your vehicle inspected immediately.

Common reasons for this to happen:

  • Mass Airflow Sensor: The mass airflow sensor measures how much air is entering the engine and relays this information to the vehicle’s computer so that the right amount of fuel can be delivered from the fuel injectors. When a mass airflow sensor begins to fail, it will typically generate an error code or “Check Engine light.” This warning may be accompanied by hesitation while accelerating, or while driving up a hill. A vehicle with a failing mass airflow sensor may also stall soon after starting.

  • Fuel Pump: The fuel pump in most modern vehicles sits inside the fuel tank and pumps fuel up to the engine. If a fuel pump cannot provide the correct pressure, fuel may have difficulty making it to the engine. A vehicle that hesitates while accelerating or while driving up a hill may have a weak fuel pump.

  • Throttle position sensor: A throttle position sensor tells the vehicle’s computer how far the throttle is open and how hard the accelerator is being pressed. The computer is then able to adjust the fuel/air mixture going to the engine so that is stays at an appropriate level. If the throttle position sensor is not working properly, it may be sending incorrect information to the vehicle’s computer. The computer may then not provide the engine with the correct amount of air while accelerating, causing a hesitation sensation.

  • Dirty/failing fuel injectors: Fuel injectors spray fuel in a fine mist into the cylinder where it is mixed with air and ignited by a spark plug. Fuel injectors may become dirty over time and not be able to provide as much fuel to the cylinder as is needed. Dirty fuel injectors may cause the engine to run lean which will in turn, cause hesitation when accelerating.

What to expect:

A top-rated mobile mechanic will come to your home or office to determine the reason why your vehicle is hesitating while accelerating. The mechanic will then provide a detailed inspection report outlining the nature of the hesitation and the cost of any repairs that need to be made.

How it's done:

A mechanic will first plug into your vehicle’s computer using a code reader/scanner to better identify what the exact issue is. In addition to reading trouble codes, he or she should also be able to get readings of oxygen/fuel intake to make sure those numbers are where they should be. Once the mechanic gets this information they can begin to fix any potential issues.

If the mechanic believes that the mass airflow sensor has gone bad or is failing, he or she will first examine the sensor for any superficial damage. The mechanic will also ensure that the sensor is wired correctly and that no damage has been done to the wire harness. The mechanic should then remove the mass airflow sensor and replace it with a new one if necessary.

If the mechanic believes the problem is the fuel pump, he or she will remove the fuel tank if necessary to inspect the pump. If the pump has indeed failed, the mechanic will replace it. If the fuel tank itself it beginning to show signs of age, it may be convenient to change the pump and tank at the same time.

If the mechanic suspects the throttle position sensor, he or she will test the throttle position sensor and it’s wiring to see if it is functioning properly. If it is not, the mechanic will remove the throttle positioning sensor and the wiring and replace them. In between removing the old sensor and replacing the new one, the mechanic should take the opportunity to clean the throttle body. The mechanic will then ensure the new throttle positioning sensor is working properly and transmitting the correct information to the vehicle’s computer.

If the mechanic believe the problem is dirty or failing fuel injectors, he or she will inspect the injectors to check for any signs of damage or leakage. The mechanic should also take this opportunity to replace the fuel filter if it is not a part of the fuel pump. They will then replace the injectors and test them to make sure they are functioning properly.

In all cases, the mechanic will start the vehicle to make sure that all of the new components are working properly. In the event that an issue has caused a warning light to come on, the mechanic will be able to clear the trouble code associated with the light using a reader/scanner.

How important is this service?

Sluggish acceleration can be annoying for drivers who expect more power form their car, but it can also be dangerous in certain situations. The unpredictable nature of an engine that hesitates can increase the chance of a potential accident especially when trying to merge in and out of heavy traffic. If you notice that your vehicle seems to be underpowered, especially when accelerating, you should not drive it if possible until it can be inspected by a mechanic.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert GMC mechanics

Real customer reviews from GMC owners like you.

Excellent Rating

(40)

Rating Summary
39
1
0
0
0
39
1
0
0
0

Richard

13 years of experience
601 reviews
Richard
13 years of experience
GMC K1500 V8-5.7L - Check Engine Light is on - Las Vegas, Nevada
Third time Richard has worked on my truck for different issues and he was great.

Terry

26 years of experience
326 reviews
Terry
26 years of experience
GMC K1500 V8-5.7L - Water Pump - Gilbert, Arizona
Terry was very professional, and proficient, I was impressed, and sure to recommend him to all my family and friends!!

Scott

34 years of experience
555 reviews
Scott
34 years of experience
GMC K1500 V8-5.0L - Water Pump - Broomfield, Colorado
This was my first experience with Your Mechanic. Scott went right to work. He took the time to explain what was going on and communicated with me throughout the process. Very pleased. Will keep Scott in mind for future services.

Larry

8 years of experience
37 reviews
Larry
8 years of experience
GMC K1500 V8-5.7L - Brake Pads Replacement (Front) - San Antonio, Texas
He was early and that was great with my schedule. He did a great job.

Excellent Rating

(40)

Rating Summary
39
1
0
0
0
39
1
0
0
0
Number of GMC K1500 services completed
440+
services done by our mechanics
TOTAL NUMBER OF EXPERT GMC MECHANICS
900+
experts on our platform

Recent articles & questions

Symptoms of Bad or Failing Intake Manifold Gaskets
Common signs include the engine constantly overheating, coolant leaking, engine misfires, and a decrease in power, acceleration, and fuel economy.
When Is My Child Ready to Use a Seat Belt?
In In all major life events, we often consider age as the prime factor in determining readiness – from when a child is ready to start school to when they can obtain a driver’s license, and everything beyond and between....
Rules of the Road For South Dakota Drivers
South South Dakota’s state motto is “Great Faces, Great Places,” so you know you’ll want to do some driving when you visit or move here. Of course, if you’re going to spend any time behind the wheel, you’ll want to...

transmission input shaft

Hello, when you removed the pump you may have relocated clutch plates in the input housing. These plates must align with a hub assembly. What happens is that the pump puts pressure on the housing because there is no...

Oil leak

This suggests you may have a leak resulting from a failing gasket somewhere in your engine. As you know, there are many different places in your motor that are sealed by gaskets. I would suggest narrowing this down by placing...

When I turn left clunking sound and when steered right a rubbing sound abs and stabilitrak light is on

Hi Adele. Thanks for contacting us today. There are several possible reasons why your warning lights are illuminated, and likely are the source of the noises you're hearing as well. Some of the possible sources include worn tie rod ends,...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (844) 997-3624 · hi@yourmechanic.com