Tapping noise 05 Seirra
#1
Tapping noise 05 Seirra
I have a fairly loud tapping noise only on a cold start up, I also noticed an unuasual amount of white smoke upon start up, but quickly goes away. The tapping noise also goes away after driving for about 5 minutes. The dealership wants big bucks to tear into the motor. They said they suspect a head problem or lifters. I only have 56K miles on the truck, change the oil every 5k miles,and drive it easily. Of course my warranty is expired, but I thought it may be covered under federal emmisions warranty. They said it's not. Can anyone give me suggestions ot other optionsbefore letting them tear into the motor?
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justin.chamberlain
General Motors Tech
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10-26-2007 01:33 PM