Reply To: P0003a code on a 20011 Gmc 2500hd

[Richard Kirshy]

While a vehicle can still run once the P003A code has registered, the excessive range of motion of the vane within the turbo- or supercharger can ultimately harm other components, such as push rods or rockers. It is therefore inadvisable to continue driving a vehicle that has triggered the P003A code, and you should seek professional assistance in diagnosing and repairing the issue before the potential costs of the fix increase exponentially due to spreading damage.