When I get home I will look it up in the book. Mean while, check your ground on the case of the module. a buddy of mine is a GM tech.....got me a schematic......the main power wire was broke in the insulation under the van......i'm gettin' AWD light now....i'm goin' to try an encoder motor now........

anyone have a schematic of the awd for a 99 safari?.....not gettin' any power to the TCCM and all fuses are good....

i have a 99 Safari AWD........great place full of info...thanks for havin' me...