I have a 2002 Envoy, although you Trailblazer owners may run into the same thing The dealer does a 30,000 mile service for almost $400 that includes numerous things: new air/fuel filters, numerous inspections of various systems such as cooling, brakes, etc. Couple items on the list caught my eye and made we wonder:
1) "drop" the drive shaft, inspect, and lubricate 2) fuel injector service; detach fuel filter and run cleaner thru injectors, decarbon throttle body, etcI use good top-tier gasoline, and occasionall Techron, so I'm questioning the need for a fuel injector service at this time.
Secondly, does that sound right about "dropping the driveshaft" and lubing/inspecting it? Have any of you Envoy or Trailblazer owners had that done on a routine 30,000 mi, service?
Thanks for info.
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