After replacing the Camshaft and Crankshaft sensors, the engine cranks but does not start?

2009 GMC ACADIA
171 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
BABIESMOMJESS29
  • MEMBER
  • 1 POST
Replaced crankshaft and a camshaft believe bank 1 it ran after they were replaced now it turns over but will not start and stay running. Does the camshaft have to be positioned at a certain angle to be aligned with crankshaft to time correctly in order to start the vehicle? I need help please.
Dec 6, 2022 at 8:21 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi,

Positioning is achieved by the mounting bolt location. You can't change it.

As far as the camshaft position sensors are concerned, there are a total of four. See pic 1 below. Are you certain the correct one was replaced? If you let me know what the original code you found was, I can confirm sensor location for you.

Also, have any new codes been set?

Let me know.

Joe

See pic below.
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Dec 6, 2022 at 4:16 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.