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Discussion Starter #1
i have a WX in my code line between the numbers, what does that mean, i understood that you either get a W or an X, not both, anyone know?
 

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If the 8th digit in the VIN is: W = 4.3 CPI
If the 8th digit in the VIN is: X = 4.3 SEFI

10th digit: W = 1998
10th digit: X = 1999
 

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Discussion Starter #3 (Edited)
W is 8th
X is 9th?!

then what does that mean? does that mean that the X is there for 2001? and is it the 190 or the 180 HP motor?
 

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If your 8th digit is W, then it should be the 180/190 hp motor. You know the year of your truck?
 

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Discussion Starter #6
this is what it says for my RPO translation from this site
L35 ENGINE , "GAS, 6 CYL, 4.3L, CPI, V6, 90 DEG, HO"

does that mean its the 190 hp? someone has to know!
 

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BUMP...I was actually wondering the same exact thing?? I have a 2001 with the W as the 8th digit....does that mean it is the "high output" model??
 

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Discussion Starter #10
lol, i thought someone would know, maybe there is another thread on it somewhere on here...
 

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SSVortec said:
this is what it says for my RPO translation from this site
L35 ENGINE , "GAS, 6 CYL, 4.3L, CPI, V6, 90 DEG, HO"

does that mean its the 190 hp? someone has to know!
SS, from what I have read, "W" is the 190 hp motor.
 

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But I had the understanding that the '96 and later models were SEFI and not CPI.
 

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Discussion Starter #14
yea, i know, i heard that too, thats why i posted here to see if my VIN and RPO codes were translating correctly...
 

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You have a pic of you engine?
 

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Discussion Starter #16
ummm, i can go take one real quick, i'll have it on my website in 45 minutes
 

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Ok. Maybe it will help to see what you have.
 

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Discussion Starter #18
Website for Truck

Here is the link for my truck pics, engine stuff is on page 4
 

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SS. That is not a CPI engine. It appears your 8th digit in the VIN is X. I believe what you have is a throttle body injector unit. CPI's have a big plastic "vortec" label on the intake and a unual shaped upper intake manifold. TBI looks kind of like a carb sitting on the top of the intake, it usually has a couple of "pod" injectors.
 

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Discussion Starter #20
lol, it used to say that, but i replaced that box with the airaid unit...
 
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