I just bought a 1998 Trans Am which is a bada** car by the way. GM made an awesome motor. Anyways, i had it taken to Autozone so they could do a computer diagnostics check since the ses light was on. The guy said that it was Knock Sensor 1 on Left Bank, Low Voltage. It made sense because the light sometimes comes on and sometimes stays off. Does anybody know how to go about checking the wiring and possibly the replacement of the sensor? Thanks

Matt

P.S. Great forum

 

I think there is a TSB on the SES light being off and it throwing a code for a knock sensor. Call your dealership and find out.

 

i had the same problem when i bought my 99 z28, i found that the knock sensor itself was faulty.. i replaced it and was on my way..

 

Knock sensors are under the intake manifold, you need to take off the intake to get to them. Just change both while you are there and put a bead of silicone around them when you are done.

 

Sweet action. thanks for the info guys... also, about how much do the sensors cost?

 

I think they are about $20-$25 bucks each PN 10456603

 

Something doesn't sound right. Knock sensor codes are front and rear, not left and right.
Usually the 02 sensors throw a left and right bank code. I would hate to see you pull your intake and replace the know sensors when that may not be what is wrong.

What was the actual code (Pxxxx) that was thrown?