Table 1 shows nine common power train related problems of the 2003 Chevrolet Avalanche. The number one most common problem is related to the transfer case (four problems). The second most common problem is related to the power train (three problems).
Service 4wd comes on and truck reverts to 2wd, dealer has reprogrammed a few times unable to correct. When traveling down icy roads with no notice. Read details...
This is the second transmission, the clip that holds the transmission line to the radiator breaks allowing the line to come off resulting in all transmission fluid being lost and resulting in destroying transmission Read details...
2003 Chevrolet Avalanche with harsh and suden unexpected down shifts. Dealer has attemped repair several times without repairing the problem. When slowing in traffic or for a turn the transmission will downshift hard and clunk and bang as if something is going to break. Read details...