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Found 5 results

  1. In this video we show the step by step process for changing the high pressure fuel pump on Cliff's 2014 Silverado with the 5.3L EcoTec V8. This issue is related to fault codes Powertrain P0172 and Powertrain P0175. The exact issue is fuel being blown past the HP fuel pumps seals and into the crank case which contaminates the motor oil. If left uncorrected, this can damage internal components as the oil will break down due to the fuel and lose its lubricating ability. ?? LINKS TO PURCHASE TOOLS & PARTS FEATURED BELOW?? A quick indicator that the fuel pump is likely at fault is a smell of fuel when removing the oil dipstick. The high pressure fuel pump failure was verified by a local dealer by monitoring the fuel trim levels. I was very surprised to find out this the high pressure fuel pump is not covered by the factory power train warranty. Especially since it is literally driven by the camshaft, directly affects the health of the motor, and the codes literally read "POWERTRAIN". GM really should get their act together since this appears to be such a common problem. Note that the fault code did clear itself after a few starts of the truck. Fortunately, this is a pretty straight forward job that only requires basic tools. The process showed in this video should be identical on 2014 through 2018 Silverados and Sierras with the 5.3L EcoTec V8 These steps should also be very similar to other GM models with the 5.3L, 6.0L, and 6.2L such as the Tahoe, Suburban, and Escalade. Try anything shown in this video at your own risk ?Parts HP Pressure Fuel Pump: https://amzn.to/2XnUq0g GM PN: 12697966 ACDelco PN: HPM1035 Note eight (x8) of these gaskets are required Intake Manifold Gaskets: https://amzn.to/2Y1hZJg GM PN: 12626354 Note: we did not need to remove the throttle body from the intake manifold during the install so this part was not required. I have listed it here because GM includes it in the recommend parts for this job. Throttle Body Gasket: https://amzn.to/2ITJRIW GM PN: 12632900 High Pressure Fuel Line: https://amzn.to/2XrsHf8 GM PN: 12677004 Unique Tools Needed Fuel Line Connector Removal Tool: https://amzn.to/2WTzN7J Flare Nut Wrench Set: https://amzn.to/2KrYqGT Thumb Driver: https://amzn.to/2FlZVlO
  2. Hi everyone. I have a 2000 Suburban I just bought a couple months ago. I got a couple of check engine codes I've been working through, but I'm stuck on these last three. I have the following current codes: P0175 (System Too Rich Bank 2), P0420 (Catalyst System Efficiency Below Threshold Bank 1), and P0430 (Catalyst System Efficiency Below Threshold Bank 1). I had codes for knock sensors as well, but got them replaced, and only these three codes remain. I took temperatures at the exhaust ports on the manifolds on both sides. Bank 2 was significantly hotter than bank 1. By more than 100F-150F. I took temperatures at the inlet and outlet of both cats. Sometimes the outlet was hotter, sometimes it wasn't. I have a cheap Walmart infrared so I take all temp readings with a grain of salt however. Outlet temps were within 100F of the inlets. I also took readings of the o2 sensor voltages for upstream and downstream for both banks. The upstreams appeared fine but the downstreams were pretty inconsistent. Sometimes staying pretty flat near 0.03v, other times they'd spike. They did this regardless of being at idle, or revving the engine at 2000rpm in park. I'm slightly confused at the information I gathered today, I'm trying to determine what road to go down. I'm good at working on things, not so much diagnosing. I plan on replacing both downstream o2 sensors with new ACDelco's to start, and that should tell me if the cats are bad if the codes come back, if my thinking is correct. But I'm most confused about how one bank of cylinders could be running rich, but the other isn't? Shouldn't all fuel injectors be getting the same amount fuel, at the same pressure? Everything I've found online says if I have P0175, I should also have P0172.
  3. I have a 2003 Silverado 1500 with the 5.3 in it. For the past couple months the trucks been getting the p0172 and p0175 bank 1 and 2 running rich. I have clean the maf sensor and put a new air filter and spark plugs in and cleaned the pcv valve, throttlebody and map sensor too checked for leaks around the intake manifold and around the throttle body and found no leaks also put in new o2 sensors and the codes still come back up every time. Wondering if anyone else has had this problem or know what could be causing the codes? I’ll post a picture of the freeze frame data from the codes too.
  4. My 2011 Sierra, 169K miles old, just started to stumble on cold starts about 2 weeks ago. Today I got the P0175 code. There's plenty of troubleshooting to do for that code and I'll start on it asap (it's cold in MI). This is the first issue I've had with the motor ever and am wondering if one event could be causing this. About 5 weeks ago I inadvertently filled up with 93 octane. That was the first time in 479 fuel fill ups that I've deviated from 87 octane. The motor has always started on the first turn whether with key or remote start since new. But in the past month it takes a couple of turns to start up and occasionally stumbles once before smoothing out. There might be a slight miss at idle, but driveability is still good and no lack of power. The P0175 today was the first SES code to come on. It's got a K&N airfilter since 1k miles and the only other change has been plugs and wires at 160K. Thoughts? Help? Thanks, Mike
  5. I have a 2006 gmc Sierra 1500 with the flex fuel 5.3l vortec. A few weeks ago I had a check engine light turn on for p0175 (system to rich bank 2), the light turned off the next day. now about 2 weeks later it turned back on with p0172 (same code except it is bank 1). Any Idea why my truck is throwing these codes, or what it might take to repair it? Any help is appreciated, thanks.
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