![]() ![]() So, if you have overdrive or first gear, you aren’t going to have a blown transmission fuse. That’s because without power to the TCM from the fuse it automatically defaults to its fail-safe operation, which is limp mode. It’s not like it might go into limp mode if it’s blown. Symptoms of a Blown Transmission fuse on a 1999-2006 SilveradoĪs mentioned above, the number one symptom of a blown transmission fuse is that the transmission takes itself into limp mode. You can find more info on it at the 4L60E Fuse Location page. It really is about that easy.Most of these vehicles have a 4L60E transmission. You just touch the top of the fuse on the part that’s designed for a test light and see if it’s hot or not. ![]() With the test light, you don’t even need the Silverado transmission fuse pulled. It’s possible for a fuse to be bad even with no visible damage. I prefer the test light because it’s more thorough. You can either pull it and manually inspect it for damage, or you can use a test light. ![]() I’ve highlighted it in the illustration above. Once you pop the fuse box open you’re going to be looking for a fuse that says TCM. It may vary a little bit depending on the year. This is the 99-06 Silverado’s transmission fuse location It’s going to have a diagram similar to the one above. You’ll see a black box about a foot up from the battery on the wheel well. The good news is that fuses are super inexpensive.įirst thing that you’re going to want to do is pop the hood. For the Chevrolet Silverado and GMC Sierra (which’ll have a 4L60E or 4L80E) it’s going to make the transmission run in third gear when in drive, with an option to downshift it into first gear. Limp mode is something that a transmission will do to protect itself from catastrophic failure. You may want to check and see if the transmission fuse has blown if it’s stuck in limp mode. The transmission fuse for the GMT800 Silverado is located under the hood right next to the battery. ![]()
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