Q: why does lights flash when in 4WDhi or 4WDlo truck does engage but lights flash on 2003 GMC Envoy

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
both 2wd and a4wd work fine and lights for these 2 selections go solid like they there some sensor that detects when the truck is in 4wd and where is it located. maybe it is defective
(1) Answer
Qualified Local GMC Shops
Qualified GMC Shops For This Repair