Computer geek/IT Student
Join Date: Jul 2010
Location: Upstate NY
ComputernerdBD is offline
Clank or knock when shifting into reverse
Hey everyone. Every now and then (but often) I keep hearing a clank or knock noise coming from under the truck when I shift the truck into reverse. It has done it since I got this car, but I am hearing it more and more when I shift the car into reverse, especially if I was just moving forward. This happens in 2 or 4 wheel drive (more so in low range). I don't know the condition of the U-Joints, but I just had the rear pinion seal replaced a few months ago and they found no issues with it and I saw them checking it. I had the differential fluid changed before Christmas and they found nothing out of the ordinary (just some fine metal on the magnet and they said it was nothing to worry about). This is exactly why I try to avoid backing this truck up, but could I have a transmission that is on it's way out or some other damage? I have almost 118k on it. I change fluids every year, I don't abuse it and I have a cooler for the trans.
1998 GMC Jimmy 4.3L/4L60E/NP233 SLT
Mods: Fog Lights, eBay Eurotails, Spectre Cold Air Intake, B&M transmission cooler, deep trans pan, interior LEDs, Posi-Lok