AtomicHoe094
Atomichoe094
You can add some tranny fluid to your oil for a couple hundred miles then change it. Tranny fluid has lots of additives in it and cleaning "shit" lol idk give it a try.
Sounds like fan hitting shroud when starting yukon
- Thread starter 03YukonNH
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
sumo
dn ʇǝƃ ʇuɐɔ & llǝɟ ı
there is a bulletin concern 07-01-38-010. Dont know if it applies to yours. The fix for my year is a pcm update. Happened to me 2x, once during a remote start, Jackhammer/loud clacking noise for like 5 seconds. 2nd time was by key. As soon as i heard the noise the 2nd time i pressed the power off for the climate system and the noise instantly stopped
03YukonNH
Full Access Member
So the problem happened the other day with my dad in the car. He is a mechanic and has owned a shop for the last 25 years. Anyways he said it is not valve lash or piston slap but sounded like I overcranked the starter. I promise I am not overcranking the starter.
So I decided to look into possibly a starter problem and got to thinking that perhaps the gears in the starter are starting to grind down. I took the starter out last night and it definitely looks original. I don't know much about starters but I did see that for the gears to engage the flywheel, the shaft pushes forwards towards the flywheel and then pulls back once the car has started. My theory is that occassionally the shaft gets stuck and doesn't retract right away, causing the flywheel to strike the gears for a second. I am just going to spray some grease in the starter gear and hopefully that shaft gets lubed up enough to prevent it from sticking.
So I decided to look into possibly a starter problem and got to thinking that perhaps the gears in the starter are starting to grind down. I took the starter out last night and it definitely looks original. I don't know much about starters but I did see that for the gears to engage the flywheel, the shaft pushes forwards towards the flywheel and then pulls back once the car has started. My theory is that occassionally the shaft gets stuck and doesn't retract right away, causing the flywheel to strike the gears for a second. I am just going to spray some grease in the starter gear and hopefully that shaft gets lubed up enough to prevent it from sticking.
Similar threads
