4wd service engine light and ticking noise at cold start up.
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4wd service engine light and ticking noise at cold start up.
Hi I'm new to the forums and had a couple question concerning my 01 Yukon 5.3l 4wd 120k miles. A few months back I started getting service 4wd light. Now this is my first 4wd transmission so forgive my ignorance. My next oil change I had em flush and replace the fluidin the tranny. Uncertain if the used synthetic. I am not the original owner and purchased the vehicle at about 90k miles. the light went away then next day reappeared. Now the it appears and reappears periodically. I tried resetting by unplugging battery to reset but still getting light. Tranny appears to be running fine fluid levels are fine. Is there something else I should be servicing seeing how this is a 4wd tranny?
Now my second question recently noticed on a cold start a ticking noise. Oil levels are normal and I'm using 5w30 valvoline non synthetic. Now last oil change being cheap I switched from a full synthetic that I had been using for about a year. Could this be what caused this? And what can I do to remedy this. I'm concerned about damaging my engine and want this vehicle to last as long as possible. Any Insight would be greatly appreciated.
Now my second question recently noticed on a cold start a ticking noise. Oil levels are normal and I'm using 5w30 valvoline non synthetic. Now last oil change being cheap I switched from a full synthetic that I had been using for about a year. Could this be what caused this? And what can I do to remedy this. I'm concerned about damaging my engine and want this vehicle to last as long as possible. Any Insight would be greatly appreciated.
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