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Chevy S10 - GMC S15 and Sonoma Warning lights and trouble codes

76 messages,  Last post on Nov 10, 2009 at 12:39 PM

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What is this discussion about? Chevrolet S-10, Auto Repair, Truck

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#1 of 76 Trouble Codes PO178 AND PO179 by km59 Feb 12, 2007 (1:26 am)
These codes are Fuel Composition Sensor Circiut #178 Says Low input and #179 says High input. The dealership says i need to replace Fuel sensor ,part will cost $677.00 and also replace fuel pump inside of gas tank upon which they want to drop and clean out because of some smut that might be in the tank due to sensor breaking apart!!! this will only cost me $1500.00, This is crazy Please can someone help me???? Replies to this message: km59 (Mar 08, 2007 12:46 am)
#2 of 76 Re: Trouble Codes PO178 AND PO179 [km59] by km59 Mar 08, 2007 (12:46 am)
Replying to: km59 (Feb 12, 2007 1:26 am) I fixed the problem by buying the part at my local salvage yard, the part cost me $10.00,I replaced the Flex Fuel Composition Sensor and the MIL light cleared and OBD Fault codes cleared. No need for all that money the dealership wanted from my wallet!!!! Do it yourself in 1HR and feel very good about not giving in to the Money Grabbers.
#3 of 76 dtc codes by redlow Mar 25, 2007 (5:51 am)
#4 of 76 dtc codes by redlow Mar 24, 2007 (12:35 pm)
Hello, this is my first post here. I have an 02 Sonoma 2wd 4.3 auto. Last year, leaving Ontario we ran into a blizzard with lots of wet snow and salty roads. The check engine light came on and stayed on until we got to NC and stopped overnight. The next morning the light was out and stayed out all the way to Florida for Bikeweek. On the way home it came on during a rainstorm and then went out when it got dry again and never re-appeared. Until...last week after a wet and salty snowstorm the check engine light came on and the truck idled a little rough. My neighbour put his code scanner on it and we got a P0300 and P0131 code. P0300 os "random misfire" and P0131 is "Bank 1 sensor 1 low voltage". I changed the driver's side front O2 sensor, intalled a new cap and rotor and spark plugs and cleared the codes. The truck ran perfectly for one day and then the Check engine light came back on and the truck started running roughly. I checked the codes again and the P0300 code is set with a second P0300 pending. I read that the EGR valve can stick and cause these problems. Here's the dumb question...Where is the EGR valve? I have ordered a service manual but it's not here yet. Replies to this message: gonogo (Mar 25, 2007 5:51 am)
#5 of 76 Re: dtc codes [redlow] by gonogo Mar 25, 2007 (5:51 am)
Replying to: redlow (Mar 24, 2007 12:35 pm) I would suspect ignition wires. EGR valve location will be found in the owner manual, shows a under the hood picture and legend.
#6 of 76 S10/S15/Sonoma: Warning lights and trouble codes by binmt May 28, 2007 (4:01 pm)
#7 of 76 service engine lite..fuel composition circuit high input by binmt May 31, 2006 (2:49 pm)
my truck keeps tripping the code P0179...fuel composition circuit high output is the explaination, I can clear this and it comes back after driving a mile or 2, any hints on how to remedy this, Replies to this message: km59 (Feb 12, 2007 12:35 am) km59 (Feb 25, 2007 11:01 pm)
#8 of 76 service engine light Mitusbhi Gallant 2001 code 135 by ddavid Jul 12, 2006 (12:15 pm)
How do you turn light off after replacement of oxygen sensor Replies to this message: kcram (Jul 12, 2006 3:05 pm) hoodlatch (Jul 12, 2006 5:11 pm)
#9 of 76 Re: service engine light Mitusbhi Gallant 2001 code 135 [ddavid] by kcram HOST Jul 12, 2006 (3:05 pm)
Replying to: ddavid (Jul 12, 2006 12:15 pm) This is the Chevy S10/GMC S15-Sonoma discussion, so you probably want to ask in our Mitsubishi Galant discussion.   kcram - Pickups Host
#10 of 76 Re: service engine light Mitusbhi Gallant 2001 code 135 [ddavid] by hoodlatch Jul 12, 2006 (5:11 pm)
Replying to: ddavid (Jul 12, 2006 12:15 pm) I drive a S-10 and my wide drives a 02 gallant. Her light came on the other day because of the o2 sensor and I cleared it with the reader I used to detect the cause. I guess the question I would have is how did you know that the o2 sensor is what caused it to come on? Last spring her light came on and it was caused by not having the gas cap on tight. Good Luck.

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