I have a 2003 chevy Silverado with codes stating p0171 p0174 90101 what does this mean
The alternator may have vaguely been connected to the codes. The codes are for lean fuel mixture on bank 1 (P0171) and bank 2 (P0174). A low voltage condition due to the alternator being bad could possibly have caused this.
Search Maintenance & Repair Questions
Maintenance & Repair Experts