dick_landy

iTrader: (1)

I'm trying to figure out how to wire in an OEM Cobalt SS 20psi boost gauge into my 2010 Silverado. Where do I get a boost signal from?

nonnieselman

iTrader: (10)

your gonna have to get it from the MAP sensor..
now the fun part is figure out how the Colbalt uses it and go from there.. it might get its info from the ECM and not straight from the MAP sensor.

Doesnt the Colbalt use a 2 or 2.5 BAR MAP?

dick_landy

iTrader: (1)

I think the Cobalts computer sends a pulse width signal to the gauge.

nonnieselman

iTrader: (10)

You might have some fun trying to figure it out then. i think the cobolts used the wierd ECM? arent they Direct injected?

chevrolet all the way

iTrader: (24)

yeah they are direct injected and 2.5 bar map.

chevrolet all the way

iTrader: (24)

i dont remember how they work, but they are an actual analogue gauge. possible their own box. i dont recall it going through the ecm

dick_landy

iTrader: (1)

Here is the pinout for the gauge.

chevrolet all the way

iTrader: (24)

so where does c go is the question lol

kretty

iTrader: (1)

Here is my old world here. It uses the ECM and BCM... Car will not even start without the boost gauge plugged in.

Here was my car in stock form...



slightly modded...
Kretty and the Stage 1 Cobalt SS at Car Craft 2010 - YouTube

dick_landy

iTrader: (1)

Pinout #10 on the Cobalts PCM. What I don't know is what that pinout is sending for a signal to the gauge.