Spectrum L4-91.5 1.5L (1985)
Exhaust Pipe: All Technical Service Bulletins
Exhaust Muffler/Tailpipe - Corrosion
Number:
86-128
Section:
6F
Date:
July 1986
Subject:
EXHAUST MUFFLER/TAILPIPE CORROSION
MODEL AND YEAR:
1985-1986 SPECTRUM
TO:
ALL CHEVROLET DEALERS
Some Spectrums which are subjected to frequent short trip use may experience muffler and/or tailpipe corrosion.
This condition is the result of excessive acid deposits from exhaust gas condensation in the muffler.
A new muffler is available, which incorporates revised materials to provide increased corrosion resistance. Vehicles which exhibit
the described condition should have the muffler assembly replaced using the new muffler, P/N 94447117.
Use applicable labor operation time and number.