I have a 99 Yukon 4x4 with the 350 and my oil pressure gage occasionally drops to 0 for about a minute then jumps right back to normal and my oil looks fine. What can cause this?
Sounds like a sender or wiring problem to the gauge unit. do the lifters start to click when the gauge drops to zero? If they do then you have an oil pump getting ready to go.
Didn't hear anything odd, I was thinking the gage cluster but wanted a second opinion
Check the sender and wiring first, the cluster won't be cheap.
Looking for a Used Yukon in your area?
CarGurus has 14,715 nationwide Yukon listings starting at $1,500.
Search GMC Yukon Questions
GMC Yukon Experts