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GM Tech (Cam)
GM Tech (Cam), GMC Mechanic
Category: GM
Satisfied Customers: 27664
Experience:  GM Grand Master Technician 2007. 11 years experience.
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GM Yukon: 97 GMC Yukon. rough idle, 10 mpg, hard to start.

Resolved Question:

97 GMC Yukon. rough idle, 10 mpg, hard to start.
Submitted: 2 years ago.
Category: GM
Expert:  GM Tech (Cam) replied 2 years ago.

GM Tech (Cam) :

Hello, I'm Cam. Please include all the details about your issue so I can accurately advise you. I cannot see your vehicle so please be detailed.

GM Tech (Cam) :

How about the fuel filter?

GM Tech (Cam) :

Cap and rotor??

GM Tech (Cam) :

intake leaking?

Customer:

fuel filter and fuel pump replaced 2 years ago. plugs wires about a year ago. has a coil pack

Customer:

only code that showed up on autozone scanner was knock sensor

GM Tech (Cam) :

Ok how about the cap and rotor?

Customer:

i have a distribution block, is there a replaceable "cap and rotor" or does the whole block get replaced as one unit?

GM Tech (Cam) :

The distributor cap and rotor at the back can be replaced on their own.

Customer:

i'll try that. if that doesn't work, are any of the problems symptematic of a bad sfi?

GM Tech (Cam) :

the SFI can, but the cap and rotor if you have not is the most common thing.

Customer:

thank you. i'll get on it

GM Tech (Cam), GMC Mechanic
Category: GM
Satisfied Customers: 27664
Experience: GM Grand Master Technician 2007. 11 years experience.
GM Tech (Cam) and 7 other GM Specialists are ready to help you

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