When ifirst start my 1989 chevy silverado it puffs white smoke

SOURCE: 82 Chevy S-10 putters out

it could be a clogged convertor, or theres a potatoe in the tailpipe.

SOURCE: 1989 chevy 350 automatic, white smoke

white smoke is antifreeze try checking the compression

SOURCE: 95 silverado chevy

if its running really bad and blowing white or grayish white smoke then its your head gasket

SOURCE: 89 chevy s10 blazer puff smoke out tailpipe when 1st started

the puff of smoke is one of 2 things, dampness in the exhuast from setting over night,like ice water on a hot day ,the glass draws miosture,this is harmless, the other is worn valve seals,a puff of gray blue smoke then it,s gone,harmless.,but if it smokes while your driving it after 2 minits you may need new positive check valve $5 part,if it uses excessive oil have it checked

SOURCE: 1995 Chevy Lumina that had

Check the engine oil to be sure it isn't over full and foamy as coolant may have drained into the oil pan. If this is the case you may have a bad head gasket due to over heating. If the oil is OK the first, easiest and most inexpensive thing to replace would be the thermostat becuse if it's stuck closed it will cause over heating and depending where the temperature sensor is located may not register the correct teperature on the gauge.