2003 Cadillac CTS fuel pump

2003 CADILLAC CTS
150,320 MILES • 6 CYL • 2WD • AUTOMATIC
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LEVIDNEAL
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  • 1 POST
how do you replace the fuel pump and also the transition pump in the 2003 cts.
Apr 16, 2009 at 3:01 PM
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DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
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Fuel pump is in tank on upper right side. Remove hoses and electrical connectors. Then using Fuel Tank Sender wrench J-45747 remove.
Not sure what a transition pump is
Apr 16, 2009 at 4:09 PM
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FACTORYJACK
  • ✓ASE Certified Mechanic
  • 4,159 POSTS
  • ASE Certified Mechanic
There is no transition pump, it transfers from side to side by siphon. Did the pump quit, or are you running out of gas when gauge still reads 1/8 to 1/4 tank? There is what is called a jet pump on the rh primary module, and a siphon tube that runs from the left sender to the rh primary. This tube was upgraded, and is recommended if gauge error is the complaint.
Apr 16, 2009 at 10:54 PM
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