[Chevy1997]

hie verybody again, my neihgbor has a tahoe 1997 and he had a trouble with truck. He received a code 1187 or 187 (meybe) in a computer scan. And in my town nobody knows what the code means and what he must to check/repair or change. Help us.
Another question: how many money are paying for a galon super gasoline?

we are paying here about 4 US$ per galon.

Bye and thanks

 

[GaryL]

Code 1187 is either "Engine Oil Temperature Sensor Circuit Voltage Low" or "Engine Oil Pressure Sensor Circuit Voltage Low". I don't think the 97 Tahoe had a oil temp sensor, so it is probably the oil pressure sensor. Does your gauge show low?

I paid $3.03 this morning for mid-grade.

Where are you located?

 

[Cableguy]

Welcome. Here is the complete list of codes from a previous post.
http://www.gmtruckclub.com/forum/showpost.php?p=23696&postcount=1

P1187 O2 Sensor Heater Control Circuit (Bank 2 Sensor 2)

 

[Chevy1997]

thanks

i´m located at Copiapo, CHile (atacama desert - ojos del salado vulcan.)

 

[Chevy1997]

mid-grade???

Sorry, but what you mean with mid-grade, 95 octanes, 93 or other?

 

[GaryL]

We have 87 to 93 octane here. Mid grade is around 90. Wish we had some 95.

Cableguy, I show the code that you described to be P1161, not P1187.

 

[Chevy1997]

97 octane here

We have a 93 to 97 unleaded.
for my chevy silverado 5.7 vortec a 97 octane is a great feed, it clean injectors and it`s hear really good inside engine