2001 Chevrolet Blazer Q&A

2001 Chevrolet Blazer Question: Where is the B1S2 heater circuit located on this vehicle?

Got a code P0141 and a P0128(which i understand is most likely the thermostat. Which 02 sensor is the B1S2 sensor on the 2001 Chev blazer? -
Answer 1
From the fuse box fuse to the o2 sensor then to a ground, usually means bad o2 sensor. -
Answer 2
try www.alldatadiy.com for location -