Issue ID | 1149817 |
Internal NHTSA # | 10676277 |
Manufacurer | General Motors LLC |
Brand | GMC |
Model | SIERRA |
Model Year | 2014 |
File date | 30/10/14 |
Component | FUEL/PROPULSION SYSTEM |
Product type code | VEHICLE |
Description of the problem | The truck was averaging about 20 mpg but shifting erratically like it couldn't decide what gear to be in. After using the 4wd the first time the mpg dropped off to about 17 and has been declining steadily currently i get 14 to 15 mpg and drive 150 miles per day mostly highway. I have taken it back to the dealer twice they said the computer couldn't get used to my driving style and reprogrammed the computer. When i took it back about the mileage a guy came out and said he could tell if something was stuck and switched the 4wd a few time and said it was fine. My mpg is getting worse and it slams in and out of gear 2-3 times in a matter of seconds while sustaining a steady highway speed on a flat surface. |
Vehicle Mileage at Failure | 5000 |
Number of Occurences | 1 |
Source of the issue | NHTSA WEB SITE |
City and State | DEERFIELD, NH |
VIN pattern | XXXXXX |
Was vehicle invloved in a crash? | N |
Was vehicle involved in a fire? | N |
Was incedent reported to police? | N |
Was medical attention required? | N |
Was part original equipment? | |
No. of injured persons | 0 |
No. of fatalities | 0 |
Date of purchase | 30/06/24 |
Was original owner? | N |
Anti-lock brakes | N |
Cruise control | N |
Number of cylinders | |
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Dealer's name | |
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