2003 Cadillac CTS fuel pump

2003 CADILLAC CTS
150,320 MILES • 6 CYL • 2WD • AUTOMATIC
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LEVIDNEAL
  • MEMBER
  • 1 POST
how do you replace the fuel pump and also the transition pump in the 2003 cts.
Apr 16, 2009 at 8:01 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
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 9:09 AM
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FACTORYJACK
  • ✓Experienced Mechanic
  • 4,159 POSTS
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 3:54 PM
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