LS1 wiring / O2 questions
Thread Starter
Teching In
Joined: Mar 2010
Posts: 27
Likes: 0
From: Dunedin Fl
LS1 wiring / O2 questions i have a project where I put a LS1 (L59 version of the LM7) out a 2001 Silverado. I am finding that the PCM is a 2002 Silverado (was supposed to be a matched set) and put it in a Jeep wrangler. It runs great but I am concerned with the gas (lack of mileage, about9 to 11 MPG)
I am running 4:10 gears, headers, cold air with 33’s x 12.5x 15 tires. It does not work hard to push this down the road.
I bought a wiring harness from EFI Connection. New O2 sensors (AC delco ) and a guy that I thought knew what he was doing cut the o2 connectors off at the harness due to the stock O2’s had a flat 4 pin connector. The harness had a 4 box pin. Talking to the guys at EFI Connection they said that it was the same as a Camaro.
So to the real question:
Do I need to use the truck O2 sensors or should I use the Camaro O2 sensor?
Is the PCM different between the cars and trucks?
The Chevy manual shows that there are two type of O2’s
O2 with case grounded sensors
And
O2 with isolated grounded sensors
Which one would be needed?
Thank you
I am running 4:10 gears, headers, cold air with 33’s x 12.5x 15 tires. It does not work hard to push this down the road.
I bought a wiring harness from EFI Connection. New O2 sensors (AC delco ) and a guy that I thought knew what he was doing cut the o2 connectors off at the harness due to the stock O2’s had a flat 4 pin connector. The harness had a 4 box pin. Talking to the guys at EFI Connection they said that it was the same as a Camaro.
So to the real question:
Do I need to use the truck O2 sensors or should I use the Camaro O2 sensor?
Is the PCM different between the cars and trucks?
The Chevy manual shows that there are two type of O2’s
O2 with case grounded sensors
And
O2 with isolated grounded sensors
Which one would be needed?
Thank you
Thread Starter
Teching In
Joined: Mar 2010
Posts: 27
Likes: 0
From: Dunedin Fl
They both have 4 wires but the colors are different. I think the trucks ones have {in A= Gray B=Black C= White D=White on the square ones A=White B= Blue C=Black D=Black
I am trying to figure out what each wire is for but the wiring diagram is showing different colors. So this is what I am chasing. I believe that the camaro is the one that I should be running. I just have to prove it now (for my self)
I am trying to figure out what each wire is for but the wiring diagram is showing different colors. So this is what I am chasing. I believe that the camaro is the one that I should be running. I just have to prove it now (for my self)
