Jump to content
  • Sign Up

Search the Community

Showing results for tags 'overheat'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • GM-Trucks.com Original News & Product Reviews
    • General Motors Product and Industry News
    • The GM-Trucks.com Garage - Vehicle Testing & Product Reviews
    • The Newsroom Archive
    • The Garage Archive
  • Next-Generation 2026 Chevrolet Silverado & GMC Sierra Speculation & Rumors
    • 2026 Chevrolet Silverado & GMC Sierra
  • 2022-2026 Ultium Electric Vehicle Forums
    • 2022-2025 GMC HUMMER EV Pickup & SUV Forum
    • 2024-2025 Chevy Silverado EV & GMC Sierra EV Forum
  • 2019-2025 Chevy Silverado & GMC Sierra Forums - T1XX Platform
    • 2019-2025 Silverado & Sierra
    • 2020-2024 Silverado HD & Sierra HD
    • 2021-2025 Tahoe, Suburban, Yukon, Yukon XL & Escalade
  • 2014-2019 Chevy Silverado & GMC Sierra Forums - K2XX Platform
    • 2014 - 2019 Silverado & Sierra
    • 2015-2020 Suburban/Tahoe & Yukon/Yukon Denali
    • 2015-2019 Silverado HD & Sierra HD
  • 1999-2013 Chevy Silverado & GMC Sierra Forums - GMT-800 & GMT-900 Platforms
    • 1999-2013 Silverado & Sierra 1500
    • 2000-2014 Silverado & Sierra HD
  • Chevy Colorado & GMC Canyon Forums
    • 2023-2024 Chevy Colorado & GMC Canyon Forum
    • 2015-2022 Colorado & Canyon
    • 2005-2012 Chevy Colorado & GMC Canyon
  • Chevrolet / GMC / Buick / Cadillac Crossover & SUV Forums
    • 2024 Chevrolet Traverse, GMC Acadia & 2025 Buick Enclave
    • 2017-2023 Traverse, Acadia, Enclave & XT5
    • 2025 Chevrolet Equinox & GMC Terrain Forum
    • 2019 - 2024 Blazer
  • Classic Chevrolet & GMC Pickup Truck Forums
    • 1988-1999 Chevrolet & GMC C/K GMT400 Platform
    • 1973-1987 Chevrolet & GMC Square Body / Rounded Line Pickups
    • 1967-1972 Chevrolet & GMC Glamour / Action Line Pickups
    • 1960-1966 Chevrolet C/K/Apache & GMC 1000-3000 Pickups
    • 1982-2005 Chevrolet S-10/Blazer & GMC S15/Sonoma/Jimmy
    • 1969-1994 Chevrolet K5 Blazer & GMC Fullsize Jimmy
  • Silverado, Sierra, Trucks, Parts & Accessories For Sale
    • For Sale/Wanted
    • Member & Vendor Rating Forum
    • Member Product Reviews
  • The Lounge
    • Off-Topic
    • Future Vehicle Speculation & Spy Shots
    • Automotive Industry & Market Discussion
    • New Member Introductions
    • Meetups, Events, & Gatherings
    • GM-Trucks.com Comment Box
  • Hobbies & Lifestyle
    • Photography
    • Major League Sports, Outdoor Recreation, Firearms, Hunting, OHRV
    • Racing, Strip, & Track
    • Trailers, Hitches, & Towing
    • Garage & Home, Snow Plowing, Landscaping, & Lawn Care
    • Technology, Devices, & Gaming
    • Vehicle Buying, Financing, Incentives, & GM Card
    • Vehicle Builds
  • Technical & Advanced
    • Vehicle Appearance, Care, & Maintenance
    • Ask the GM Technician
    • Performance Engine Tuning
    • Transmission, Suspension, Transfer Case, & Axles
    • Wheels, Tires, & TPMS
    • Audio, Electronics, OnStar, MyLink, Intellilink & SiriusXM
    • How-To
  • Commercial Vehicles
    • 1980-2009 Chevrolet Kodiak and GMC Topkick
    • Chevrolet Express & GMC Savana
    • Chevrolet Silverado Chassis Cab 4500HD/5500HD/6500HD
  • Black Truck Club's Topics
  • Texas Owner's Group's Topics
  • California Owner's Group's Topics
  • New England Owner's Group's Topics
  • Midwest Owner's Group's Topics
  • South Carolina Silverado Owners's Topics
  • Canadian Owners Club's Topics
  • SCUBA divers of GM-Trucks's Scuba Talk
  • Red Truck Club's Topics
  • Idaho Sierra & Silverado Owners Club's Idaho
  • Colorado Trucks's Exhaust Setups
  • Colorado Trucks's Pics of trucks
  • SEO Paint's seo color ordered
  • NorthSky Blue Club's NorthSky Blue Metallic
  • NorthSky Blue Club's Pics
  • diesel 3.0's Topics
  • MIAMI TRUCK LOVERS's YOUR FAVORITE CHERVROLET MOD?
  • HNK's **#[HERE'S-UPDATED]#@ FREE V-BUCKS CODES IN 2025
  • HNK's [10K-Free-Followers]##TikTok Followers Generator 2025
  • HealthCare's ~nano Defense Pro Reviews 2025: After 365 Days of Use, Here's My Real Experience
  • HealthCare's Prime Biome Reviews: (We Tried It for 90 Days): Here’s Our Honest PrimeBiome Review and Insights!
  • HealthCare's MITOLYN Reviews 2025: (We Tried It 365) My Honest Review
  • Participate in Giveaways's Topics✔[[Fortnite!!]]+FRee* v Bucks GIFT CARD CODES 2025 ✔Free Fortnite v-Bucks Redeem Codes List
  • Participate in Giveaways's @+Free Fortnite Vbucks Redeem Codes List 2025 Free-Pass!! 1000 Fortnite vBucks codes List 2025
  • Participate in Giveaways's (UPDATED)^Fortnite Free V Bucks Codes 2025: The Ultimate Guide to Legit Rewards & 13,500 V Bucks Offers Daily!!
  • Participate in Giveaways's @+((FREE)))^ FORTNITE V-Bucks Codes Updated 2025 New List Of Newest Free V-Bucks Gift Card Giveaway
  • Participate in Giveaways's @+(NEW-CODE)!!+FREE Fortnite VBucks Card Codes 2025: The Ultimate Guide to Legit Rewards & 10000 VBucks Card Codes
  • Participate in Giveaways's Today's Fortnite Redeem Codes 13,500 V Bucks Free (2025) Epic Games Fortnite Battle Royale
  • Advantage Strategic's =//Roblox Gift Card Codes List 2025 - Free 10000 Robux Generator Unlimate That
  • Product & Supplement Review's Mitolyn Reviews and Complaints:~(We Tried It 360) My Full and Honest Review!
  • Product & Supplement Review's Ikaria Juice Supplement Reviews:~(We Tried It 90 Days) An Honest Customer 2025 Review!

Calendars

  • Events
  • Birthdays
  • Texas Owner's Group's Events
  • California Owner's Group's Events
  • Midwest Owner's Group's Events
  • Red Truck Club's Events

Categories

  • Articles
  • News
  • Reviews
    • Project Sierra
  • Resources

Blogs

  • HNK's **#[HERE'S-UPDATE]#@ FREE V-BUCKS CODES IN 2025

Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


MSN


Website URL


Yahoo


Skype


Facebook


Twitter


Name


Location


Interests


Drives

Found 3 results

  1. I have an interesting overheating problem with my 1990 C3500 Silverado 7.4L. I recently bought the truck from an uncle who, I'm guessing, screwed me on the deal... We use the truck to tow our travel trailer (22ft. roughly 5000lb). Prior to our first voyage out, we drove the truck around town to make sure everything worked well. After a few trips to our main hike spot I noticed the truck would run warm, 220-240, for a short time and then spike down to 210. I assumed it was the thermostat sticking. So I replaced the thermostat with a 180 degree unit. I topped off the coolant in the reservoir and it seemed to have fixed the problem. We went on our first trip, now pulling the trailer, and at our halfway point, I got off the freeway to fill up the truck. about 20 seconds after we dropped our speed below 30 mph the truck spiked, redlining above 260. After starting it up, it quickly started to overheat again until we hit the freeway speeds and all was good. This behavior continued up until we hit our destination. Thankfully, my mechanic brother-in-law was camping with us. He thought it was the fan clutch but after looking at the radiator, I was about 2.5 gallons low on coolant. Since we were out camping, I used the rest of the gallon I had and filled the rest up with water. Brother-in-law said the water pump looked like it was running good and it might have just been under-filled when my uncle replaced the radiator. Ran ok until we slowed down off the freeway. It looked like the coolant would get hot and boiling out of the reservoir. I just kept topping off the radiator and driving home (picked up coolant 50/50 on the way back) Looked at it at home and noticed a leak above the drain valve. Tightened the valve about 1/4 turn, filled up the radiator and again the truck ran fine until our next trip. Same problems, had someone bring out a new radiator cap since it looked like the coolant was not being pulled back into the radiator. Coming back we had the same problem. I since replaced the hose from the radiator to the reservoir and "burped" the system by running the truck and squeezing the upper radiator hose until the coolant level would no longer drop in the radiator. The oil looks really clean (not milky or showing signs of water/bubbles). Coolant looks clean and I have topped of the radiator last with concentrate coolant to account for the water I added before. So I don't think it's the head gasket. I rotated the fan with the truck off and it stopped immediately after letting go. There wasn't any play when I tried moving the fan around so I don't think it's the fan/fan clutch. I hear an electric fan on when it's overheating/hot and the fan clutch kick in when its really hot. Rather than purchasing a bunch of new parts I thought I would get on here and ask a couple questions and see if anyone might have some things to try out. Would having enough air in the cooling system keep the coolant from being sucked back into the radiator? Could the fan clutch not be engaging at a low enough temperature? If the radiator is a 2 core, would that cause the coolant to boil enough to cause an air gap that would then keep coolant from being pulled back into the radiator? This truck was originally purchased new by my grandpa in 1991. He was a mechanic and took amazing care of the thing (all receipts). My Uncle purchased it from him a couple years back and I believe it was just sitting on his property for most of the time.
  2. Story: transmission overheated @ 60k miles. Warranty replaced with new transmission. I’ve had the vehicle (2018 suburban LT 4x4) since new and always sit around 190 degrees give or take and back and fourth around 200 when towing. With the new transmission I keep hitting 210 up to 220 driving around town and not driving hard. I haven’t towed yet but tow often and I am very concerned and afraid to tow. I just finished a thermostat delete to test that out and driving for about 30 min around town and freeway it was over 190 and climbing. It took a while to get there compared to normal but still got hot. Dealership has no clue and the transmission shop has no clue. I need help in figuring out what could be causing the heat. I am so for an oil change and my AC blow nice and cold.
  3. Fellas and Gals! I am having a problem with my cooling fans not coming on my 2006 GMC Sierra, 5.3. I can force them on by running the A/C constantly. But if the A/C isn’t on, the fans won’t come on till the truck reaches almost 230 degrees F, which I’m on the road to cracking a head at the temp. I’ve already replaced the fans, thermostat, engine temp sensor, checked to make sure I’ve got good water flow through my radiator, I’ve replaced all three cooling fan relays and I’ve checked the wiring harness. The fans will come on when I reach in there and manually unplug the harness from the temp sensor while the truck is running and it sometimes will throw a code after that. The only thing I can imagine may be happening is the CPU is not sending the ground signal to command the fans to come on when the engine reaches the appropriate temp (≈ 202, without the A/C being on). Has anyone ever experienced the CPU messing up and not send a ground signal to the system, what am I missing? S.O.S. PLEASE SEND HELP!!
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.