Thread: 1998 Grand Prix 3.1L - Crankshaft Position Sensor help

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  1. #1 1998 Grand Prix 3.1L - Crankshaft Position Sensor help 
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    Ok, new guy here. I bought my GP about a month ago, no issues other than today. I got my oil changed today, and as an added service, the oil change place noticed the check engine light was on and ran the computer to see what code was popping up. Said the Crankshaft sensor. Ive already bought the part, but after hours of searching online, I can only come up with insturctions on replacement for the 3.8L. Does anyone have any detailed instructions on how to replace the sensor? This would be extremely helpful. Thank you in advance.
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  2. #2 Re: 1998 Grand Prix 3.1L - Crankshaft Position Sensor help 
    Moderator dsmuts's Avatar
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    I've never done the crank position sensor but i've done a cam position sensor on the 31/3400 and its not to bad. I'm thinking the harmonic balancer has to come off to do it.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
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