» » »

GMC Q&A

Ask Your Question

2001 GMC Sierra 1500 Question: Have 2001 GMC sierra with 5.3 engine and it was made canada. I have checked and

 

Question

JimOw, 5.3L V8, Vacaville, CA, March 18, 2012, 23:32
 Rookie

only found 2 O2 sensors on exhaust. replaced both and still getting p0140 error code? Does canadian trucks only have 2 sensors?

3 Answers
Flag This
  • Answer #1

    Hal... (see my shops), March 19, 2012, 06:46
    Profile_thumbnail
     Master

    You'll have 4 sensors total. 2 before (upstream) the catalytic converters and 2 after (downstream.) Another site said it was the MAF...Do some more homework.

    Reply
    Flag This
  • Answer #2

    Prestige Auto Works (191 Answers) , Sacramento, CA - (916) 550-9579
    Prestige Auto Works March 19, 2012, 11:31
    Profile_thumbnail
     Journeyman

    This code sounds like it's indicating the second sensor on bank one.

    Reply
    Flag This
  • Answer #3

    April 08, 2012, 06:23
     Rookie

    apparently someone has emptied out your catylic converters. That's why you can't clear the code.

    Reply
    Flag This