2021 GMC Sierra 3500 HD Transmission Service

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Take Time for Your GMC Sierra 3500 HD Transmission

Whether you drive an automatic or manual, Firestone Complete Auto Care can help diagnose and fix transmission issues. Schedule transmission services for your Sierra 3500 HD today.

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What Does Your GMC Sierra 3500 HD Transmission Do?

Your transmission carries power from the engine to the wheels so that you can drive at the speed you desire. Since the transmission has to translate the precise amount of power for your desired amount of speed, a small transmission issue can put a big dent in your Sierra 3500 HD’s performance. They're often easy to notice. 2021 GMC Sierra 3500 HD transmission problems can show up as shifting delays, grinding or jumping during acceleration, a feeling of shakiness, or whistling noises or a burning smell coming from beneath the hood. If you don’t pay attention to GMC Sierra 3500 HD transmission trouble you could see your fuel economy decrease or find that you can't drive your Sierra 3500 HD at all.

GMC Transmission Recommendations for 2021 Sierra 3500 HDs

Your Sierra 3500 HD’s transmission should be inspected routinely, according to GMC. Specifically, your Sierra 3500 HD differential and transmission fluids should be exchanged at regular intervals with GMC-approved products. Our technicians are trained to service 2021  GMC Sierra 3500 HD transmission systems according to vehicle manufacturer recommendations. As soon as you suspect something’s wrong with your Sierra 3500 HD’s transmission, book an appointment at your local Firestone Complete Auto Care to help keep your GMC running for miles and miles.

GMC Sierra 3500 HD Transmission Service Pricing

We do our best to keep GMC Sierra 3500 HD transmission repairs and services affordable. Drop by your local Firestone Complete Auto Care for a free Courtesy Check. We'll inspect your Sierra 3500 HD's major operating systems so you can have the information you need to make the best decision for your car. Whether your vehicle needs a transmission fluid exchange or repair, you can trust our Triple Promise: Fixed Right. Priced Right. Right on Time.

2021 GMC Sierra 3500 HD Transmission Q&A

  • What happens if I "ride" my GMC's brakes? Riding the brakes or keeping your foot on the brake pedal (even lightly) can lead to transmission issues. Remember that when you’re driving down winding roads, and opt for engine braking when possible.
  • How much can I tow in a GMC Sierra 3500 HD? Think twice before volunteering to tow your friend's moving trailer, no matter how light the load might seem. Defying your Sierra 3500 HD towing capacity can spell trouble for the transmission system. Double check your owner's manual to ensure your Sierra 3500 HD is equipped with a towing setup and can handle whatever you're thinking about towing.
  • How often does my Sierra 3500 HD transmission fluid need to be checked? Regularly checking and exchanging your 2021 Sierra 3500 HD’s transmission fluid is one of the best ways to help the transmission system perform. Some technicians would say that between 30,000 and 60,000 miles is a good timeframe for having your GMC's transmission fluid checked and replaced, but that timeline can vary depending on how your vehicle is used and your manufacturer’s recommendations. Luckily, leaks and low fluid levels are easy to spot and inexpensive to fix.
  • Can my GMC Sierra 3500 HD leak transmission fluid? Over time, transmission fluid can leak from your GMC Sierra 3500 HD, potentially causing transmission problems. A transmission fluid leak may be caused by a damaged transmission pan, faulty transmission cooler lines, worn-out seals, a cracked transmission housing, or an overfilled transmission.
  • Who can fix my  GMC Sierra 3500 HD transmission leak? Your local Firestone Complete Auto Care can troubleshoot and repair Sierra 3500 HD transmission systems. Book an appointment online today.
  • Can I still drive my GMC Sierra 3500 HD if it has a transmission fluid leak? It’s not advisable to drive your Sierra 3500 HD if it’s leaking transmission fluid. Your transmission system needs transmission fluid to function properly, and a leak can lead to significant problems, such as overheating or reduced performance. You might even experience transmission failure.