2004 avalanche engine light comes on going up hills
Go to your local auto parts and have the codes read. They will do this for free. Post the codes back on here and we will be able to help you figure out the issues you are having.
dont know the numbers but was told it was mass air flow senser.
More information is needed. Specific code to start.
Looking for a Used Avalanche in your area?
CarGurus has 4,490 nationwide Avalanche listings starting at $2,500.
Search Chevrolet Avalanche Questions
Chevrolet Avalanche Experts
Related Models For Sale
Used Cars For Sale