Question about 2011 Chevrolet Silverado 2500HD
How do I get it to clear up, when I clear the code, it goes to keep driving cleaning exhaust filter and 20 seconds later goes to reduced power
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Posted on Jan 02, 2017
hi john , sure sounds like you may have unplugged the coolant temp
sensor or didn't get a good connection at the sensor , location , in
between two exhaust ports on the side of the engine that has the oil
fill and pcv .
Posted on Jan 27, 2009
Under the dash board there is an electrical block with nothing plugged into it. there are 2 rows of terminals. on the top row on the right is terminal "a". terminal "b" is the second one in from the right. terminal diagram labeling is like this from left to right.
top row,"F", "E", "blank","C","B","A"
bottom row "G","H", "blank","blank","blank","blank"
take a small piece of wire and jump terminal "A" and "B". i found an unfolded paper clip works well. with the terminals jumped, turn the key to the on position.(DO NOT START ENGINE) with the key on, the service engine light will start flashing codes. count the flashes. it will repeat each code 3 times before moving on to the next code. your first and last code will be a code 12. that is just the test code. it lets you know you did it right. you will see 1 flash with a short pause then 2 flashes. after you see that 3 times, your next code will be your trouble codes. when you see code "12" again, there are no more. if you tell me what the codes are, i'll tell you what the mean. hope this helps.
Posted on Apr 11, 2010
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