answersLogoWhite

0


Best Answer

Most of the times this is a result of a dirty mass air flow sensor. It is located in the air inlet hose at the air filter housing and has a connector with 3 wires on it. Clean it with brake cleaner or electronics cleaner.

User Avatar

Wiki User

9y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How can you fix CEL codes p0171 and p0174 on a 2001 GMC Sonoma?
Write your answer...
Submit
Still have questions?
magnify glass
imp