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GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Chevrolet Suburban 1500 Z71: I have Chevrolet suburban 2003

Customer Question

I have Chevrolet suburban 2003 Z71, after replacing the fuel pump I had some problem with the AC compressor is not operating and it's disconnecting alot when check engine comes it's gives me two codes P0651 and P0452, I changed the AC high pressure switch and still the problem existing. What to do?
Submitted: 1 year ago.
Category: Chevy
Expert:  Eric replied 1 year ago.
HI,When you replaced the fuel pump did you disturb the ac lines at all- this is only applicable if yours has rear ac Is the compressor cycling on and off quickly? do you have ac gages to check the pressure?