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What is your question?
I have replaced the fuel pump four times once a year and crankshaft sencer. charcol canister. fuel relays replaced and still lugs and back fires when give it gas or pull hills. can enyone help. no codes are showing. check light comes on or blinks once in a while.
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The blinking Check Engine Light is key, this means that you have a very severe engine misfire. first thing to check and most likely replace are the Plugs. Wires and Coils. The 100k tune-up is a myth of epic proportions. Also check the back pressure in your CAT Converters. The Fuel Pump MAY be a bad fuel pump harness, which is common on GM trucks, not a failed fuel pump. see this article I wrote on misfires, I do Emissions work in CA and I have to pull my hair out every day working on these types of issues. http://repairpal.com/misfire-what-does-it-mean http://repairpal.com/check-engine-light write back if you need more help