Are there any problems with the GM transmission?
In response to the GM transmission class action lawsuit, GM filed 13 technical service bulletins regarding the faulty unit – none of which were able to solve the problem. GM then tried to rebound with an “improved” 8-speed transmission in the 2019 Silverado and 2019 Sierra models.
What are the most common problems with a GMC Sierra?
Another 258 people reported the second-biggest issue where heating and air conditioning temperature and air delivery mode door actuators may fail. If one or more delivery mode door actuators fail, the HVAC system may not produce correct temperatures or air delivery. The HVAC system stores fault codes, which help with diagnosis.
What kind of transmission does a Sierra 1500 have?
I read a list that said my 2010 Sierra had a 4L60E but it is in fact the 6L80E – if you have 6 gears, you almost definitely have this transmission on a 1500 truck from this era (the heavy duty trucks have a 6L90E). Suddenly, you have no forward gears in your vehicle.
What causes a GMC to not shift gears?
Vehicle won’t move in any gear. Low transmission fluid level – One of the most common issues that prevent a GMC vehicle from shifting when placed in the Drive (D) or Reverse (R) is a low transmission fluid level. Shifter link – The shifter link connects the shifter to the transmission valve body.
Are there transmission problems with a 2003 GMC Sierra?
After five years, most of the issues with these trucks had been worked out. Now, these trucks are getting older, and it’s very likely that your 2003 Sierra may be having transmission problems. Below, you’ll find a ton of troubleshooting your transmission problems.
Why is my GMC Sierra not moving in any gear?
It is pretty applicable to the 4L80E as well. Not Moving in any Gear – If your 2003 Sierra Transmission has a problem moving in any gear, it’s likely caused by a lack of transmission fluid. No matter how silly that sounds, and how convinced you are that it’s not the problem, go ahead and check it anyway.
How can I tell what kind of transmission I have in my GMC Sierra?
First and foremost, it’s necessary to determine what kind of transmission is in the truck. The easiest and quickest way to go about determining this is by RPO codes. The RPO codes are a list of production options that are printed u p and stuck in your trucks inner glove compartment when it’s produced.
Is there a transmission defect in a GMC?
An alleged GM transmission defect has gained more coverage as more owners complain of the issue in Chevy pickups, GMC vehicles, Cadillac sedans, and sports cars. Sign In