Well, some of the '02's had a bad cylinder sleeve. Have you had your TB checked for this problem? What is the vin or serial # and someone here can check and see if your vehicle falls within the problem range.coastie22 said:I have an 02 trailblazer LS. Whenever It starts, its a smooth idle, but the engine sounds like it knocking really bad. It tends to go away during long trips. I;ve tried using better gas, but I noticed no difference. Is this noise normal or what? Thanks!
BS!! Go to another GM dealership with the truck. Mine had the problem at 17,500 miles. Sounds like the dealer just doesn't want to work.coastie22 said:Well i got it back. Of course all they went by was the noise. No borescope at all!And they wouldn't when i asked them to.They said no GM motor had that problem over 15,000 miles! They said they've never had to deal with it so they basically said, yea, we hear the noise, no clue what it is, but its not normal, have a great day!They have a special policy that they almost refuse to enforce.
If it were me i would try to find one from a different year. If you do decide on that truck make sure it has a warranty(maybe buy an extended one also).Deuce said:ZR WON,
Thanks for the info on the liner cracking. I have been looking for a low km 02-03 TB LTZ or Envoy SLT and have come across an 02 LTZ that I am/was intersted in. Supposedly it has had some bottom end engine work done on it, still waiting for the actual papers to verify what was done. Sounds like it had the piston slap and was fixed.
I guess what I'm questioning is the reliability of the rebuild. Is the piston slap going to occur again, or is the rebuild a guaranteed fix? All speculation of course.
I noticed the parts list states QTY: 1 Engine, Goodwrench Service Replacement. Followed by instructions to install new service engine. Are they doing a short block replacment?
I checked the VIN number and it fits right into the affected number and the in-service date was August 20, 2001. So it was one of the first produced. I'm beginning to think that I will move on and leave this LTZ alone.
Any other advice or information?