Walker Products 235-1116 Engine Camshaft Position Sensor Replacement for GM Vehicles - Perfect for Chevy, GMC, Buick & Cadillac Models - Ideal for Engine Performance & Diagnostics

I'm not sure why the listing states both Camshaft and Crankshaft sensor, as this is the crankshaft sensor only. Fit like a glove, appeared to be better made than the OEM I replaced. I opted to replace this sensor, the camshaft sensor (part# 235-1115), and the MAP sensor as I was getting pulsation of engine RPM when engine was warm prior to replacement. You can ohm these parts out to identify which is bad - but I'm too lazy to do that. This part is located on the passenger side engine block near oil filter, it's hidden by an engine mount - use a 13mm open end wrench or ratchet wrench to loosen the bolt, start and run the engine until engine block luke-warm to touch. Removal is best done with passenger tire removed (allows for more wiggle room) and loosening ATF lines bolts both before and after engine mount. Using a small pry bar it should pop out, expect to break the dog ear on the old one getting it out - keep tip of crow bar or large flat head screw driver near flange and twist/pry out - oil on new o-ring allows for easier insert. Install is reverse of removal hope this helps...