K 2500 Truck 4WD V6-262 4.3L VIN Z (1992)
1.
Transmission hot mode entry temperature raised from 252 degrees F to 270 degrees F. Install MEMCAL per charts.
2.
Check Thermac door in air cleaner for correct operation. Door must open and close freely with no sticking or binding.
7.4L with MT1 transmission