Questions & Answers for: GMC Sierra check engine code

...check engine light) the other day I washed the engine in my truck and drove it for apprrox 150 mile the next morning I drove for 32 miles and the check engine light came on. I had a friend of mine ...

...check the Engine Light. This system is called obd1 and applies to most vehicles made before 1995 for domestics and 1993 on imports. For GM domestic vehicles made before 1995, the diagnostic connector ...

...CHECK ENGINE" lamp. A diagnostic connector, located under the instrument panel, is used to activate the self-diagnosis system. The connector,allows access to system circuits and contains a test ...

check engine light had been come'n on and going off now its staying on what should i do.... Get an OBD-II scanner (like a $98 one at Walmart) that can scan the computer for stored codes. This can tell

...check engine symbol stayed on? well mainted and has always ran great since new. Sometimes the check engine light will come on if the fuel cap is not on tight enough. Check the fuel cap for an intact ...

check engine light means something has happened to the performance of the engine to affect emissions.  You need to get the computer scanned for trouble codes to proceed.You can research "GM check

...check engine light on? The check engine light comes on when the truck is in park and idles for about 2 min. stays on for about 2 days then goes off Have codes read by someone with good scanner that ...

2001 nissan sentra 1.8 engine check engine code p0420 PO420=Cat Converter efficiency code.....Multiple tests are applicable for this code

check engine light Po171 I have a 2001 GMC Sierra 5.3...I am getting engine code PO171. But the check engine light only comes on with that code when it is cold outside.Like zero to 25/30 degress. When

check engine light. What that means is the transmission set one or more codes but to access them you need to look in TCM, not the ECM. Unfortunately, without knowing what the transmission codes are we