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Found 25 results

  1. I have a 2004 Sierra 4.3l v6 that has started to run pretty rough on idle like it wants to bog out, I noticed my exhaust tips black (don't know if that matters). I checked the codes and got the P0300 code random misfire. I have replaced the spark plugs and the spark plug wires as well as the ignition coil, distributor and the distributor cap. That did not seem to solve the problem and I've ran out of ideas. Anyone might have some insight on what it could be that is causing this P0300 code?
  2. I have a 2004 GMC Sierra 4.3 and lately it's been like losing power when I'm driving down the road it acts as if it stalls and I pump the gas pedal and it turns back on or regains power. I have replaced the fuel filter, fuel pump, speed sensor, mass airflow sensor, spark plugs and also cleaned the throttle body. Do y'all have any idea what could be causing my truck to be acting like that?
  3. I want to start by saying i understand i am working my truck a tad hard. And I AM going to continue. I just want to protect it as much as possible while doing that. I have a 2014 silverado with the 4.3 v6. 102,000 miles and never a problem. Owned since new. When i haul heavy up gravel roads my tranny gets hot like....220-240. I am a carpenter and pull materials and box trailers. I installed a snow plow this year which is snow moving so not a lot of air moving past radiator. I have hit 250 before. I had the transmission flushed at 50,000 and again at 100,000. But i would like to get my temps down. I am thinking an aftermarket fan? An additional tranny cooler? From what i read the tranny cooler is basically built into the radiator. And because the engine runs so hot you wont get too much cooling ability. Also it dosnt start actively cooling until 190? So i guess i need to adjust my thinking to the trucks 190 and up temperature range. But I am not happy with 230 for hours on end. I dont plow commercially just a few small drive ways. Any technical advice, not just opinions(lol) would help.
  4. Hello, I am hoping that you can help me diagnose what is causing a hesitation on my truck when accelerating from a stop. It sometimes also hesitates when shifting at low speeds 10-30mph Truck Specs 2014 silverado 1500 WT 4.3L V6 locking rear end 32,000 miles no codes, using bluedriver scanner red Problem two weeks ago truck took two tries to start never done this before has not happened again last week truck started hesitating on acceleration from stop every time rpms drop from 1500ish to 500ish and then jump back up and truck accelerates I have attached one of the drive logs where you can see the fuel rail pressure drastically change when the engine rpm drops You can see the seven times the truck hesitated at the drops in the graph Started logging other items to see what is happening and found this spike in the temp sensor, attached picture also. intake temp sensor is yellow line and engine rpm is blue line. I highly doubt the temperature actually went from 55F to 135F during my commute. What I have done Checked transmission fluid, truck level and hot. Fluid in the dashed good zone between the holes. No burnt smell. Found the strange temp reading. Truck off Unplugged the mass air flow sensor and drove around large parking lot. Hesitation completely gone truck drive normally for 5 min. Check engine light off. Truck off Plug in mass air flow sensor and drive around parking lot again. Hesitation back Check engine light on with codes for MAF unplugged. Thought MAF was the issue. Bought new MAF and air filter Installed MAF and air filter Problem gone on test drive for 15min, truck fine, no codes. Next day, hesitation is back, no codes Realize I need help. Post on forum. I'm sure I have left out some important information, just let me know and I'll try to answer. I greatly appreciate the help. Thank you.
  5. Hello all. I own an 18 Silverado 1500 LT , double cab, 6’6” box, 6 spd transmission, I have opted to put 26” status alloy empire wheels with tire size of 305/26/30. Stock transmission gave out. Stock Transmission went out. They said torque converter and pump went out then everything else went with it. Was able to replace the entire unit with a remanufactured from GM. 1 month later, back to the shop (dealer). They covered the repairs because it was under warranty but if it goes out again they won’t because they believe it is the rims causing the trouble. However they will cover if it goes out with stock wheels. Which I will be putting back on. Has anyone else experienced issues with this type of truck and 26” wheels? I did research the “Unsprung weight” makes some sense, however only the transmission gave out, not my drive shaft, drive shaft knuckles, diff, just the goofy transmission which I know the 8 speed has had their share of ongoing things. How is it that a truck that is capable of towing 9k lbs has issues with no load on 26” rims. Pulling a payload in the bed of the truck and pulling a trailer should still have the same effect. If I can’t tow anything with the truck, then what is the point of a truck. I have went back to stock rims to see what would happen. Anyone with info ,thought , something sketched on a cocktail napkin would be greatly appreciated. I do thank you all for your time on this. I have attached the service ticket to this post.
  6. Good Day folks, I am attempting to fix my 1994 Chevy Truck 2 Wheel Drive - 350 motor - 4l60E Transmission . I want to switch out the TPI System for a carburetor and Regular Intake setup , What Fuel Issues will I run in to as well as Electrical as far as Distributor? Another Question regarding my truck; my truck had a 4.3 V6 Vortec Motor , I put a 1990 5.7 350 V8 Motor in my truck , If i put new Intake and Carburetor in my truck -plus change Fuel Setup , CAN I still Run Same ECM computer from my Vortec V6 Motor in my Truck Answers are appreciated Thanks The Outside World The Soss
  7. 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???
  8. I have a 2001 silverado extended cab v6 that is a base model. It came with no power locks or windows. I am trying to convert them. I already have panels,switches and the harness out of a 2002 z71. My problem is I found out my fuse box won't support this. I can provide pictures if necessary. I'm looking for advice on if I can just get another fuse box out of a truck that has the options and do I need to get a new underdash harness as well? Also if anyone has done this swap before any other insight would be greatly appreciated Its a project truck and has sentimental value so I'm not just going to " go sell it and buy a truck with all the options"
  9. 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
  10. Hey guys, Just wanted to post a positive experience on here! I bought a Silverado 1500 Crew Ecotec3 4.3 V6 about a year and wanted to write how impressed I am with it. I looked down yesterday and I was cruising at 94 with no problems at all. I was just keeping up with traffic when I looked down at the speedometer. I had to slow down because I didn't realize how fast I was going. The thing still had plenty of power cruising at 94! I'm the type of person that won't be hauling a trailer or anything super heavy behind it, so I don't have any information on how it handles those things. I came from an 04 Avalanche with a V8 and honestly, I can't notice a difference in power at all. I do think they're rated about the same horsepower though. All around, I couldn't be happier with the purchase. I have never gotten in my Silverado and regretted my decision to get it over a Camaro. Just wanted to post a happy post today!
  11. 2005 silverado reg cab short bed 2wd 4.3 v6 5 speed manual 63,000 miles Driving on the highway I downshifted while braking for a ramp and all the sudden my engine idle got stuck between 3800 and 4300 rpms. Limped home with the truck under what seemed like constant 20 percent throttle while in gear by itself. take it out of gear and it revs up to 4000 again, incredibly hard to put in gear and kinda dangerous to drive. No cel and nothing stored in my code reader, wondering where to start on fixing this? Pulled on throttle cable and seems free, spring is good and throttle moves. Can I replace a solenoid? IAC? Brake booster blow a vacuum line? Thoughts on this would be appreciated.
  12. I am hoping to start up a good conversation on upgrades/information/etc on the 4.3L V6 Ecotec3 engine. There isn't much info on here about it. Well...I can't be the only Silverado 1500 owner with that engine. Just looking to see what people have done. Any issues? Just a good informational forum/topic.
  13. 4.3l vortec hesitating when I accelerate it runs fine when I'm driving around town but when I get on it that's when it starts anyone ever have the same problem I have been trying to figure out what it is for over a year now
  14. Hello everyone! I recently purchased my first GMC sierra, 4.3l work truck to haul some kayaks and get me through the winter. while driving it home i tested the 4x4 and it all worked, the 4lo was a little clunky to get into but i had no problem engaging it. after a few miles i started hearing a clacking sound, it sounded a lot like a U-joint so i investigated when i got home and found it to be coming from the transfer case. there was a leak at the rear output shaft seal, so i replaced that and went to drain and put fresh fluid in, but to my horror there was almost nothing in there, and what came out was a black thick sludge, so i put fresh fluid in and drained it again. again what came out was better looking than before but still clearly dirty. so i finally put in another 2 quarts of dex IV that the dealer said i should be using, and have been driving it for a day or two less than 50 miles. when today noticed that the shift lever is stuck and i cant move to any of the 4x4 gears. the linkage is free i played with it and it moves around. the things that has me perplexed is that the 4x4 worked after the fluid change. i don't know much about transfer cases, and am hoping someone with more knowledge could point me in the right direction on what my issue could be. sorry for the rambling i was trying to get as much information in as possible that i thought could be helpful.
  15. Yesterday my odometer turned 10,000 kms. on my trouble free V6 in my 2015 Sierra 1500 CC 4X4. I have used my truck for every type of task I would/will use it for and haven't once been disappointed. The V6 will provide more than enough power for the majority of people and is only lacking in the bragging rights enjoyed by its bigger brothers. I decided to do something about it because nobody riding I'm my truck can tell its not a V8 unless I tell them! (I did post this picture on the thread telling what you did to your truck today)
  16. Was flipping through the 2017 GM VIN card information today. https://service.gm.com/dealerworld/vincards/pdf/2017%20Vincard%20LDT%2012-22-15%20r1.2.pdf Page 17 provided some good information on the ColoradoCanyon and their V6 engine (currently the LFX). Looks like for 2017 they get the LGZ 3.6 Gen 2 V6. LGZ would be based on the LGX which resides in the 2016 Camaro. What could this mean for Colorado/Canyon? Obviously some more HP and torque, but, seeing that LGX now has AFM as one of its core features, there is potential for the twins to get it now.
  17. Hi all, new member to the forum here. Hope I can get some input on the new 2016 silverados from you all. Here's my situation. I am relocating to texas for a new job in august. I am thinking of picking up a new 2016 chevy silverado 1500 before i leave as a want something reliable that i don't have to worry about once im in a different state. This is a big purchase for me and im thinking of either the double or crew cab with a v6. doesn't have to be 4 wheel drive but if i can get a good deal then i will pick it up. I've only needed 4 wheel drive in a couple situations before. my current chevy has not let me down besides a few times with minor and easy fixes. it is a 1998 silverado 1500 that i use to tow the boat on weekends. No major problems with it. i drive a sedan when im not towing anything. from everything that i've read the vibration issues on chevy is a BIG problem and GM still doesnt have any fixes. it seems like a huge headache and one that i don't want to deal with. I have read A LOT about the 2014/2015s but haven't heard too much about the vibration issues with 2016 models. My question is; does the 2016 have the same problem as 2014 and 2015s? also what other problems keep arising? and is it major or minor problems? i think now there should be enough people with 2016s to hopefully answer my question. Ive been driving chevys my whole life and the thought of geting a f150 doesn't sit well with me haha. but if i have to because of GM's problems i will even though i really want a silverado. Thanks so much for any input!
  18. John Goreham Contributing Writer, GM-Trucks.com 11-09-2016 In a surprising result, the new 3.6-liter V6 and new transmission for 2017 in the GMC Canyon and Chevy Colorado LOWER the combined fuel economy of each by 1 MPG from 20 MPG to 19 in the 4WD versions and from 21 to 20 MPG in the 2WD trucks. The new engines do boost power by about 3 hp to 308, and torque is up by 6 ft-lbs, but at the same 4,000 RPMs. Clearly, GM didn't intend for the new drivetrain to drop by 1 MPG. Our guess, and this is only based on our general knowledge of the subject, is that GM is taking a more conservative approach to its MPG ratings. We have noticed many manufacturers have been doing this as the 2017 numbers come out. A recent example is the Mazda6. The EPA is calculating its fuel economy results differently in 2017 and many models will see such a dip. These results now mean that the Toyota Tacoma has a 1 MPG advantage than the Colorado and Canyon when equipped with its automatic transmission. Researching the Tacoma we noticed that its manual V6 MPG dropped by 1 MPG for 2017. It's not our job to just speculate, so GM-trucks.com has reached out to the Chevrolet spokesperson responsible for the Colorado to see if an answer is available. We will update our readers pending more information.
  19. After searching multiple threads trying to decide what brand of new/used truck to buy I landed at a Silverado because of the range device. My goal was to have a light duty truck that gets around 20 MPG. My mechanic buddies said hell no to the Siverado due to AFM problems. No to Nissan because alot of the stuff under the hood needs the cab of the truck removed to access. No to Ford because it's Ford and I just flat out don't care for a Dodge. So I picked up the new V6 which broke my rule of never buying the first year of a new motor. On slightly hilly and curvy county roads in Mid Missouri I got 21.4 mpg average with v4 activated. I am averaging 19.4 with the Range plugged in. It has yet to run my battery down. Longest without a start would be 3 days. The shift points were definitley smoothed out except first to second going up hill and that doesn't happen all the time. Stock tires also. The reason I didn't do the tune is that I didn't want to take a chance on voiding the warranty by making changes to the computer. Truck had 26,000 miles when purchased. If you get the V6 on a flat highway you could probably jump the MPG up to 21 or higher as I have seen this on short trips. Hope this helps.
  20. John Goreham Contributing Writer, GM-Trucks.com 8-26-2016 General Motors will be offering an all-new V6 engine and 8-speed automatic transmission in the 2017 Colorado. The new engine is intended to offer better real-world acceleration, while at the same time optimizing fuel economy. Given the new transmission, and expected improvements to the V6 in terms of efficiency, it will be interesting to see if the new gasoline V6 can match the cost per mile of the Duramax Diesel engine when the national average prices of gas and diesel are applied to the calculation. Stan Ludlow, chief engineer for the 2017 Colorado, offered his take on the new engine and what it means, saying, “The Colorado is currently the most fuel-efficient pickup truck in America, with an EPA-estimated 31 mpg highway when equipped with the diesel engine. As such, for the new V-6 and eight-speed combination we focused on improving everyday driving performance. Drivers will immediately notice that it pulls harder when accelerating from a stop or passing on the highway; it is more confident pulling a trailer up a steep grade and it is more refined cruising at a constant highway speed.” The new engine is based on the current 3.6L V6, but has a host of improvements. Fuel efficiency will increase due to improved variable valve timing for intake and exhaust, and improved direct injection. Chevy is also using Active Fuel Management (cylinder deactivation), which disables two cylinders under light throttle applications, for the first time in the Colorado. The new engine is rated at 308 hp at 6,800 rpm and 275 lb-ft at 4,000 rpm. The current V6 in the Colorado is rated at 305 HP and generates 269 lb-ft of torque at 4,000 RPM. While the changes are minor, coupled with the new 8-speed transmission the effects may be noticeable. Chevy says that the new 8-speed has a first gear that will have more grunt due to a "a numerically higher first gear ratio." The wider overall gear ratio spread will also keep RPMs lower at highway speeds. Using lightweight alloys, the new transmission, Hydra-Matic 8L45, is about the same size as the outgoing six-speed and has the same weight. GM has not yet announced the same changes for the GMC Canon, but that will surely follow. No word yet on pricing or other 2017 model year details, but GM did say to expect the new model year Colorado to appear on dealer lots "in the fourth quarter." GM did not offer an image of the new drivetrain. Image of Colorado in the snow courtesy of Zane Merva.
  21. Hello everyone, I just wanted to know if GM is using different suspension on the V6 models compared to the V8 trucks. My truck currently sits at 39-3/4 inches in the back and 36 inches in the front. This seems very steep and honestly I can't stand to look at the truck from a "back angle" because I feel like the back sits way to high. I am wondering if this is a V6 thing because the WT's that I see and a few SLE trucks I see have this same high rear end rake. It seems like the SLT and All-Terrain trucks have a much more level look. Am I crazy or is my rear end crazy high? Is there anything that can correct this? By the way I have a double cab 6 foot bed V6
  22. I have a 2014 GMC Sierra Reg cab base package. I was wondering if I can how to go about changing my manual crank window on the passenger side to a power window so I don't have to lean over to roll it down. And I also curious if its possible to change the back window to one with the sliding window in it. Any advice or ideas would be greatly apprieciated.
  23. After endless reading I figured I would reach out and just ask for help with what I'm looking for. I have a 2014 v6 sierra sle. I'm just looking for the off road look not planing on taking it off road or anything. I plan on going with 33 or 35 tires and 20inch rims here are my questions. I'm looking for an affordable lift kit. 1 Is it better for me to do RC 2.5 front 1 rear plus 1.5 zone body lift? VS 4 inch suspension kit? 2 in your opinion what's the best affordable suspension kit. 3 what makes it a full suspension kit vs a glorified leveling it? 4 Is RC 3.5 a real suspension kit? Thank you I'm new to trucks and the site. This is what mine looks like so far. Nothing fancy.
  24. 3.6L V6 Chevrolet Colorado & GMC Canyon Fuel Economy 2WD: 18mpg city / 21mpg combined / 26mpg highway 4WD: 17mpg city / 20mpg combined / 24mpg highway “The all-new 2015 GMC Canyon adds segment-leading fuel economy to its winning resume,” said Kenn Bakowski, Canyon marketing manager. “Innovations such as available active grille shutters combine with an aerodynamic design in a smaller, more maneuverable package to set a new standard for fuel economy in midsize trucks.”
  25. By Zane Merva Executive Editor, GM-Trucks.com 9/03/2014 When the 3.6L V6 equipped Colorado and Canyon hit dealers in the next couple of weeks, customers will find fuel economy ratings of up to 26 miles per gallon. Today, General Motors released fuel economy figures for V6 and 6-speed automatic equipped version of the company's new mid-size pickup line. This is the first time the 3.6L has been used in a pickup application and will be rated at 305-horsepower. 2-wheel-drive customers can expect a range of 18-26 miles per gallon and 4-wheel-drive customers can expect 17-24 miles per gallon. Four cylinder and 2016 diesel fuel economy figures will be released at a future date. 3.6L V6 Chevrolet Colorado & GMC Canyon Fuel Economy 2WD: 18mpg city / 21mpg combined / 26mpg highway 4WD: 17mpg city / 20mpg combined / 24mpg highway “The all-new 2015 GMC Canyon adds segment-leading fuel economy to its winning resume,” said Kenn Bakowski, Canyon marketing manager. “Innovations such as available active grille shutters combine with an aerodynamic design in a smaller, more maneuverable package to set a new standard for fuel economy in midsize trucks.”
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