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Found 65 results

  1. Need some opinions on what the heck is going on with my 2007 silverado classic. It has a 4.8 litre vortec with an afe cold air intake, edge cts2 programmer, gibson shorty headers, and a 3 inch catback exhuast. I have the code p0430 coming up but cant figure out what it is. Ive done a back pressure test on the cats, and did knock sensors and all O2 sensors a year ago. It doesnt feel like it has a misfire and im very mechanically inclined and everything in this truck is looked after. When i bought it there was a 4wd code and it wouldnt engage so i swapped out the button cluster in the cab and now it works fine. Other than that the truck has been perfect but id like to figure out what the heck is setting off the code. I have no exhuast leaks and the cats checked out perfect, anyone know what else it could be? Im looking for anything at this point, i hate check engine lights and have cleared it with the programmer but it comes back very shortly after being cleared. Thanks
  2. Newb here. My 07 Yukon has been in the shop over a week now. (Local mechanic) Have had the vehicle about a year, changed the oil regularly, replaced oil sensor and sending unit due to the infamous low oil pressure warnings. Thing has driven great until randomly one day she started idle hard and misfired when going into first. I changed all sparks, plugs. No change. Shop is saying my oil pump is completely shot..? I've had no noise no other signs of it starting to fail. My sensor would routinely go off a month prior to oil change being due. Do these things really just crap out? Could it be related to my misfire? They are checkin the head on that, otherwise she drove normal and smooth once I go over 15mph. If she survives and my wallet doesn't get drained, I will be disabling the AFM.
  3. So I have recently purchased a Range AFM disabler for my 2017 Silverado 1500 E-assist because of the constant stopping and starting at stop lights, exhaust drone from V4, weird shifting from V4 to V8 and my transmission liking to jerk/shifting hard every so often. After installing the Range device, it has solved my transmission issues, disabled stopping and starting at stop lights, and has been keeping it in V8 mode 24/7! The only thing I have noticed is that when I am decelerating from a speed of around 50 MPH or more, the engine will have a fast repetitive backfiring popping sound until i either get back on the gas pedal or have reached a speed of 35 MPH. It seems to happen when i am decelerating slowly and not fast, starts to backfire when it starts to downshift at around 900-1100 RPMs I have a flowmaster Super40 cat-back dual 2.5 inch exhaust with the third "cat" still on. It used to not backfire when the AFM was active BUT when decelerating, it would switch back into V4 mode. is there a way to fix this? Is there too much freeflowing exhaust? Can this backfiring through the exhaust cause any damage if left unfixed? Thanks, -Hunter
  4. Hello, everyone! I Thought it would be a good idea to record the sound of my truck when towing a Polaris Ranger and a quadbkike when going uphill and make a white noise video The Engine running at almost full throttle at 2500 rpm makes for a nice humming noise and i would like to share it with you Enjoy
  5. So I had a check engine light on for awhile didnt think much of it till it thru me into limp mode before work one morning. I did some digging around and ended up replacing my throttle body. Light went away everything was great then a week later it came back on and not long after that it thru me into limp mode. It hasnt done it since. The truck is throwing codes for the TPS, Evap, and a random misfire. Before i go spending money I dont have and throwing random parts at it does anybody have any clue? its been several days since it put me in limp mode but it hasnt come back yet.
  6. Hi all, 15 Yukon SLT (94000 miles) here So I had a misfire code P300 and engine light blinking late December 18. Done a tune up (replaced all sparks and wires) and everything was fine until a few days ago. Didn't feel any lose of power, vibrations and etc. Got another misfire code, this time P0305 (cylinder #5) a few weeks back. Mechanic looked into it and couldn't reproduce. Had an engine carbon clean up. Again no lose of power, vibration poor fuel economy and so on. Couple of days ago got another misfire P0305. Called the mechanics and he suggested a compression test. Not sure if needed as no other signs are apparent. He also start speaking (worst case) about taking the cylinder out to be inspected and replacing AFM lifters. I've looked into mode 6 on my OBD scanner as saw that cylinders 1,3,5,7 all have misfires, though below the threshold so no codes or lights. Cylinder #5 had count of 78 misfires and the rest (1,3,7) around the 1-5 (thats after a 2hr drive) What I found weird is that the AFM cylinders (2,4,6,8) had no misfires. Aren't those the ones with the lifters? I've replaced the coil of cylinder 1 with 5 and got the same results (higher counts of misfires on 5) so don't think that is the problem. Anyone encounter the same issue? How was it solve? Any suggestions for self diagnostics before its heading back to the a shop? Thanks
  7. Howdy! New to the forum, not sure if I’m doing this right. Anyhow, I’d like to install true duals with an X pipe on my Silverado. It’s a 2002 1500 Extended cab with the 5.3L. Is there a bolt on exhaust system like the one I’m looking for, or would I need to have it custom built and fit at a shop? If I need to have it built, is there a good exhaust shop in Western Kentucky you could recommend? Thank you!
  8. I currently own a 2003 Silverado 1500 LS with the Z71 package. I have almsot 284k miles on it with the 5.3 vortec engine. I have almost had it a year and bought it with 273k. I know it has been taken care of because its very clean, with no sludge in the oil, as well as no metal shavings in the oil and transmission pan when I changed their gaskets/fluids. So far I have changed: - Rear diff gears - Knock sensors - Catalytic converters - Trans fluid and filter - Oil pan gasket - Intermediate steering shaft - A/C system - T-case fluid - Added a Spectre cold air intake - A few other minor things As of now I have a rear main seal leak, as well as a clunk. I have researched the clunk and have come to the conclusion that it is the famous GM slip yoke clunk, so I am not too worried. It it was the trans, I would have likely seen metal shavings in my trans fluid. I am likely going to be fixing my rear main seal leak in a few months. I do all this work myself so it's not too expensive to fix and I kind of enjoy working on it. Basically, I really like my truck and I would like to keep it, but I am wondering how long I should expect from the engine? I'm pretty positive the trans has been changed since it has such high mileage. Let me know what you all think.
  9. I currently own a 2003 Silverado 1500 LS with the Z71 package. I have almsot 284k miles on it with the 5.3 vortec engine. I have almost had it a year and bought it with 273k. I know it has been taken care of because its very clean, with no sludge in the oil, as well as no metal shavings in the oil and transmission pan when I changed their gaskets/fluids. So far I have changed: - Rear diff gears - All shocks - Knock sensors - Catalytic converters - Trans fluid and filter - Oil pan gasket - Intermediate steering shaft - A/C system - T-case fluid - Added a Spectre cold air intake - A few other minor things As of now I have a rear main seal leak, as well as a clunk. I have researched the clunk and have come to the conclusion that it is the famous GM slip yoke clunk, so I am not too worried. It it was the trans, I would have likely seen metal shavings in my trans fluid. I am likely going to be fixing my rear main seal leak in a few months. I do all this work myself so it's not too expensive to fix and I kind of enjoy working on it. Basically, I really like my truck and I would like to keep it, but I am wondering how long I should expect from the engine? I'm pretty positive the trans has been changed since it has such high mileage. Let me know what you all think.
  10. trying to put together a swap for a 75 custom deluxe and was wanting the 6l80 transmission for the efficiency. would it work with a 4th gen 2005 5.3 out of a silverado?
  11. 2003 Silverado 2500HD gasser. Just got the truck about 6 months ago so I'm not to sure what kind of history, or other work my truck has had done to it previously. Right when I got the truck I started losing my fan settings. I only had 4 and 5. Heat was working better then than it is now. Anyways, I replaced the blower motor resistor and that fixed my fan problem. The heat has always been intermittent on the driver side though. And recently it hardly ever works. It's winter now, and here in Illinois its pretty cold. So I would like to get this fixed ASAP. If i mess with the temp. controls it will sometimes switch to heat for me. I can hear the blend door opening and closing. What is my problem. Any questions or clarifications I'd be more than happy to answer! Thanks again.
  12. Hi hello, recently my v8 2001 1500 suburban rear end got destroyed, i have a v6 2004 Silverado 1500 with no motor, i was wondering if i can just swap the rear ends on them, anybody know if it will it work? What could be the problems if i do it and its not compatible???
  13. Curious to know who in this forum has the highest mileage truck. Just took delievery of my new 2018 truck with the 5.3 V8 and 6 speed tranny and wondering how long I should expect it to last? Coming from a Toyota with about 350k kms I have set the bar pretty high haha. Feel free to post the year of your truck with the # of miles and what repairs/replacements you have done to date. Trying to get a little thread going about mileage and what people have been able to get. Since this is a 2014 forum I'm not expecting massive numbers, but I know some of my friends with Rams that have had engines and transmissions break down at 50k-80k kms (moment of silence for Ram owners) Ford seems to be doing a bit better in terms of major issues. If there's already a thread regarding this issue please redirect me to that one
  14. John Goreham Contributing Writer, GM-Trucks.com 12-12-2018 Wards has named the General Motors 6.2-liter V8 engine with Dynamic Fuel Management (DFM) to its 2019 Wards 10 Best Engines Award list. “General Motors’ thundering 420-horsepower V-8 in the Silverado exemplifies how engineers continue to find ways to improve efficiency without giving up something in return. DFM determines 80 times per second exactly how many cylinders require fuel to meet power demands. And, incredibly, it uses as few as two cylinders to propel the full-size pickup down the highway,” says Wards' Senior Content Director Drew Winter. “The truly amazing part is the cylinder deactivation is imperceptible, so seamless that the only thing the driver notices is fewer stops at the pump." Coincidental to the award, GM-Trucks.com has just taken delivery of a long-term tester with this very engine. “Chevrolet first introduced its Active Fuel Management cylinder deactivation system in 2005, and Dynamic Fuel Management is a natural progression of the technology,” said Jordan Lee, Small Block chief engineer. “Dynamic Fuel Management enables only the cylinders needed to deliver the power you want, seamlessly delivering the best balance of power and fuel economy.” The full list of Wards' 10 best engines is as follows: 3.0L (B58) DOHC Turbocharged I-6 (BMW X5) 6.2L OHV V-8 with DFM (Chevrolet Silverado) 5.0L DOHC V-8 (Ford Mustang GT/Bullitt) 3.0L DOHC TurboDiesel V-6 (Ford F-150) 2.0L DOHC Atkinson i-VTEC 4-Cyl./HEV (Honda Accord Hybrid) 120-kW Fuel Cell/Electric Propulsion System (Hyundai Nexo) 150-kW Propulsion System (Hyundai Kona EV) 2.0L DOHC VC-Turbo 4-Cyl. (Infiniti QX50) 2.0L DOHC Atkinson 4-Cyl./HEV (Lexus UX 250h) 3.6L DOHC Pentastar eTorque V-6 (Ram 1500)
  15. I recently bought a used 2016 Sierra Denali 5.3L 4x4 in March with 48k miles. Truck has been great until yesterday (now 52k miles) when I ease into the gas it shudders and shakes like crazy until i punch it. The tach is bouncing up and down and it doesn't matter if it's in v8 or v4. It almost feels like it's a misfire but it's weird that it only does it when I'm easing into the throttle or going uphill. The truck has the 8 speed transmission. Has anyone else ran into something like this and would the manufacturer warranty cover the fix for this?
  16. Hi. I own a 2015 Chevy 1500 Silverado 4.3L V6 CrewCab 5.8' Box. Can I swap the rear differential from a V8 1500 Silverado onto my 1500 Silverado? According to chevy I can tow max of 5,600lbs, I blew out my rear differential from towing 5,300 pound trailer, bearings are shot, shattered. Trailering – 2015 Silverado 1500 Crew Cab (SAE J2807) 2WD: Crew Cab, 5’ 8” box 5,600 lbs. / 2,540 kg. – 4.3L (3.23 axle
  17. Hello, I'm new to the forums here and needed some assistance in replacing the shocks and tires on my new Truck. I just recently purchased a 2016 Silverado High Country with 35k miles on it and after a week a driving it around I feel that it rides a little to stiff/bumpy for my liking. I know it's not supposed to ride like a Cadillac or an Audi or anything like that but my previous 2014 Sierra All Terrain seemed to ride pretty smooth. I have heard that replacing the stock tires and shocks can help with that issue but I have no clue as where to start. Was hoping some of you GM truck enthusiasts could help enlighten me as to which shocks and tires I should look into purchasing for an overall more comfortable ride. Thanks in advance
  18. I’m looking for any information on swapping gen3 5.3 With a gen4 controller (I want to use the 6L80e transmission.) I know the knock sensors are in the valley cover and it has the 24x reluctor and 1x cam sensor. I’ve heard it is possible to relocate the knock sensors to where they are on gen 4 block and swap reluctors and cams to work with the gen 4 controller, does anyone have any experience with actually doing so?
  19. Hi Guys, i got a 2016 4wd GMC sierra and it has stock suspension and it rides really bad the oem shocks are very soft and whenever i hit a bump the front keeps bouncing. so what do you guys recommend i'm trying to do a 4/6 drop if it is possible and replace the shocks with stiffer shocks why do you guys think ? which lowering kit and shocks should i get ? Thanks here is a side pic of the truck
  20. Hello everyone! I am new to the forum and was hoping the community could help me with my new vehicle search. I absolutely love the styling, features and capabilities of the 2018 Sierra. I think the SLT trim level with the z71 package would provide the perfect balance of capability and luxurious comfort. I am all but sold on purchasing one of the last few 2018 models that are still sitting on the dealer lots. My conundrum comes from the various reviews that call the GM truck's reliability into question. One such prevalent issue is the vibration or "chevy shake" that drivers experience at highway speeds (from my research, an un-balance drive shaft may be the culprit). The other prevalent issue appears to be the hard downshift and "clunks" that may come from the transmission. On paper, I love everything about the vehicle. I am just apprehensive about making a big investment in something that appears to have frequent issue. Any opinion on this topic is much appreciated!! Thank yall!
  21. 1999 GMC Sierra 1/2 ton 4X4 240k miles I am hearing a loud single pop/clunk from the front end passenger side when I turn the steering wheel sharp LEFT ONLY in forward and reverse. I can replicate the noise nearly 100% of the time if the truck is on a moderate to steep incline. This only happens at slow speeds. I feel next to nothing through the steering column. I hear the most out the front passenger window and feel the pop/clunk through the floor of the cab. I have replaced the intermediate steering shaft with the updated GM part. Any direction would be really appreciated.
  22. Guys, I'm new here and I'm sorry if there's already a similar thread about this issue. I chose to eliminate my new truck fever by sprucing up my truck that has been paid off for 5 years now. My truck is 2WD and leveled. I went from the stock 17" wheels with 275/70/17 tires to the XD Buck 25 20" x 10" rims with a -25 offset. The new tire size is 275/55/20. I got it back from the tire shop and it was rubbing everywhere and shaking while I was breaking. The shaking came from the clips or "keepers" on the rear wheel studs that keeps the drum in place in the factory (got that part resolved after it was found on this forum! So, thanks guys!). After much trimming, the tire shop says I need a 3" suspension lift to have more room and eliminate all rubbing. Am I missing something? It's been four days in a row that I've been to the tire shop and it seems that nothing is getting resolved other than the shaking due to the clips. Is there a certain style trim that I can perform? Any advice would be greatly appreciated!!
  23. Weird thing happening, my check engine light came on and my scanner pulls P0113 and P0228. P0113 is IAT sensor and P0228 is Fuel and Air Metering. I had to remove the airbox last night to replace a headlight, which requires me to unplug the IAT sensor right on the airbox. And then when I took the truck for a drive, I noticed the engine fans are running at full blast and then the engine light came on (solid light). Immediately turned off the truck, hooked up the sensor and checked the codes. Saw they weren't "hazardous" and drove to work. Why would unplugging the IAT sensor cause a code to be thrown? I checked and made sure to reconnect it securely. Its on there fine. And why are the engine fans going full blast? Thanks guys.
  24. has anyone invested in an oil catch can? if so, what one and what kind of success??? Worth it?
  25. John Goreham Contributing Writer, GM-Trucks.com 7-11-2017 East Coast Defender blends English ownership and tradition with a U.S.-based workforce in Florida to build amazing Land Rover Defenders. The classic compact SUV is quickly becoming one of the hottest classic restoration segments in America, and East Coast offers some very interesting updates on what is perhaps the defining European "contemporary classic" compact SUV. East Coast Defender's latest project involved adding a Chevy small-block V8 to the classic Defender 90. The East Coast Defender 90's LC9 has 326 hp, up a smidge from the 68 hp the vehicle originally started with about 30 years ago. East Coast Defender adds a six-speed transmission, stainless exhaust and brake lines, EBC Performance brakes, and an improved cooling system centered around a Ron Davis aluminum radiator. “We have an incredibly diverse client base who come to us from across the country,” said Elliot Humble, East Coast Defender Co-owner. “I believe that speaks volumes about the broad appeal of our handcrafted Defenders. Like a finely tailored shirt, each SUV we build exudes the character and personality of its owner. ‘Project Blackout’ is an attractive vehicle that’s a stunning extension of its new owner.” This off-roader looks like a cool combination of old and new. What say you GM-Trucks.com faithful?
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