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2002 Chevy Tahoe crankshaft position sensor error codes P03

Tiny
TODD BENOIT
  • MEMBER
  • 2002 CHEVROLET TAHOE
  • V8
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
The engine has begun to stall as I'm driving, usually highway, and seems to happen as I'm decelerating. The RPM drops to 0, doors lock & unlock, electrical warning light indicator activates, lose power steering. An aftermarket programmer, Hypertech, used mainly to compensate for slightly larger tires (33"), that also required a 3" body lift, indicated the above error codes. The programmer allows me to reset the codes and the vehicle runs perfectly.

Should I change the sensor myself? If I do will I have to do a Crankshaft Variation Relearn? Should I have someone check the wiring and ECM with diagnostic tools?

What would you do?
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Thursday, March 12th, 2009 AT 1:18 AM

1 Reply

Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
First, I would double check the connections to the CPS. They have had connection problems in the past. If all is good, I'd change the sensor, clear the codes in the ECM and just drive it and see what happens. Hope this helps.
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Thursday, March 12th, 2009 AT 1:42 AM

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