the dealer said it may just need oil changed or more coolant that service engine does not mean to replace the thermostat they said it takes a 10,000 dollar machine to read it properly not the one at the auto parts store. ???? any ideas on this issue. Mountain man1
2004 chevy trailblazer i was told to replace the thermostat, then dealer said no on 2004 Chevrolet Trailblazer
by Mountain man 1 in Richmond, VA on March 18, 2013
2 answers 2 comments
ANSWER by milesauto , March 18, 2013
What is your problem ? Is there waring lamp on?
COMMENT by Mountain man 1 , March 18, 2013
The reading says service engine soon.? I just had oil changed about 2 weeks ago dealer says the reset should have been done when oil was changed it was not?????
COMMENT by milesauto , March 18, 2013
That does not sound like a maintenance reminder light....It may need to have the system tested for faults related to emissions etc.
ANSWER by cardoc888 , February 08, 2015
If the "service engine soon" light is illuminated in the cluster while the engine is running then you have a concern that needs to be taken care of. The power train control module has a code stored in its memory. If the code is a p0128 then you probably need to replace the thermostat because it is opening before it should. This is a very common problem with the trailblazer equipped with the 4.2 L engine.