2006 Chevrolet Silverado 3500 Problems

What owners report

Owners of this model year most often describe brake lines that rust, leak or rupture, followed by transmission cooler line fluid leaks and brake response or ABS problems. Other common complaints include tire and valve stem failures and turbocharger faults that lead to limp mode power loss. Where mileage is recorded, most brake line and transmission leak reports come from trucks above 40,000 miles, and brake line complaints often mention corrosion.

1. 1
   Brakes

   Brake lines rust, leak or rupture

   • 7 complaints (13%)
   • median 90,805 mi at 9.3 yrs old (6 state mileage, few)
   • 1 mention a crash, fire or injury
   • filed 2012–2019

   Owners describe brake lines that rust, leak, rupture or fracture, sometimes causing a sudden loss of brake pedal pressure. Some say the pedal went nearly to the floor or the truck did not stop, and others describe a line failing while towing or while turning into a driveway at low speed. Some complaints say the steel lines were found corroded when inspected, and some say the failure was not reported to the dealer or manufacturer. Where mileage is recorded, these reports fall between 14,712 and 140,000 miles, and some happened while towing or at highway speed.

   1 related service bulletin

   What to check: Inspect the steel brake lines along the frame rails and near the master cylinder for rust, leaks or soft spots, and ask whether any line has been replaced. Ask whether brake line repairs are documented, and whether the lines were checked after heavy towing.

   2 excerpts from owner complaints in NHTSA records

   “In the process of exiting from our home, while towing a large boat, a brake line ruptured releasing the brake fluid and causing a complete failure of the brake system. I inspected the ruptured area and found that all the brake lines were severely rusted and ready to fail at any time in the near future. The vehicle was towed to a repair facility to have the brake lines replaced. Estimated cost is $950. Had this failure happened one minute later the results could have been catastrophic!”

   NHTSA complaint #10621087, filed 2014-08, 81,610 miles

   “Driving home from a camping trip pulling 30ft 5th wheel , pushed on brake pedal to slow down & pedal went almost to the floor , pulled over & found brake line leaking under master cylinder on top of frame rail , repaired line to get home , upon inspection of brake lines, they are very weak, since then I've had to fix 2 more brake lines, luckily not pulling anything ,I have friends with these same trucks & inspected there's & also look the same,1 friend took his to dealership & they told him that this is normal? …”

   NHTSA complaint #10593102, filed 2014-05, 140,000 miles
2. 2
   Transmission and drivetrain

   Transmission cooler line fluid leaks

   • 6 complaints (12%)
   • median 57,365 mi at 4.2 yrs old (6 state mileage, few)
   • filed 2009–2011

   Owners describe red or pink fluid leaking from the front or underside of the truck, from transmission cooler lines or related lines. A report says the leak was noticed only after snow, and a complaint warns of fire risk if the lines fail. Complaints also describe the truck shaking and a rattling noise from a leaking drive line. Where mileage is recorded, these reports fall between 43,788 and 135,500 miles, and some say no help was offered because the truck was outside warranty.

   What to check: Look under the front of the truck and along the transmission cooler lines for red or pink fluid, and check the fluid level and any wet spots. Ask whether the cooler lines were inspected or replaced and whether any leak appears in the service history.

   2 excerpts from owner complaints in NHTSA records

   “All 3 transmission cooler lines leaking transmission fluid. I had the exact same problem on 12/11/2007. The dealership where I brought my truck in stated this is a common problem that they see frequently and in fact they stated they had a 2007 truck in their shop that day with the exact same problem.”

   NHTSA complaint #10256230, filed 2009-01, 63,730 miles

   “I noticed pink liquid leaking on 2006 chevy SILVERADO 3500 diesel, 46,000 miles. I only realized it was leaking (pink fluid) because of the snow we recently had. I took it to the dealership expecting it to be covered under the warranty. Dealership quoted $841.08 before taxes to fix transmission lines. I inquired about warranty and he said it wasn't the engine. I decided to search on line because I thought the transmission was a part of the powertrain and found many, many, many complaints about this same problem. …”

   NHTSA complaint #10299701, filed 2010-01, 46,000 miles
3. 3
   Brakes

   Brake response, ABS and parking brake faults

   • 15 complaints (29%)
   • median 72,500 mi at 7.9 yrs old (12 state mileage)
   • 1 mention a crash, fire or injury
   • filed 2007–2026

   Owners describe brakes that respond late or act without pedal input. Complaints describe sudden lockup of all four brakes during turns and highway driving, a pedal with a long delayed response, and anti-lock brakes that engage at very low speed and let the truck travel further before stopping. A complaint says rusted ABS sensors led to pulsing and extra stopping distance, and a separate report describes a parking brake that failed to hold on a grade until the shoes were replaced and adjusted. Where mileage is recorded, these reports fall between 51,450 and 99,000 miles, and the anti-lock brake complaints describe stops at slow speed.

   1 related service bulletin

   What to check: On a test drive in a safe, open area, check the pedal response at low speed and during a gentle turn, and listen for anti-lock activity during slow stops. Ask whether the bulletin on brake pedal movement at full turns was checked, and whether the parking brake holds the truck on a slope.

   2 excerpts from owner complaints in NHTSA records

   “On my 2006 SILVERADO 3500, when applying the brakes, as the vehicle slows to about 2-4mph...the ABS activates and the stopping force of the brakes is reduced causing the vehicle to miss the intended stopping point. I have replaced both front hub bearings which includes the front sensors as others have reported this cures the problem yet the problem persists. There are 80,000 miles on the vehicle, I have owned since new, there have been no accidents or abuse. There are no check engine lights, ABS lights or anything indicating a fault. …”

   NHTSA complaint #10366501, filed 2010-11, 80,000 miles

   “Parking brake failed to hold truck stationary during inspection. We tried to adjust pedal following the GM service manual and brake still would not hold. Removed rear brake rotors and found lining on shoes worn off. Replaced shoes, hardware, and rotor. Checked cables and actuators for shoes. Assembled, adjusted and burnished shoes as per service manual, brake still would not hold truck on grade inspection was conducted on. Adjusted shoes until they were dragging on drums and could finally get brakes to hold truck. …”

   NHTSA complaint #10503129, filed 2013-03, 51,450 miles
4. 4
   Tires

   Tire and valve stem failures

   • 6 complaints (12%)
   • median 38,500 mi at 2.9 yrs old (3 state mileage, few)
   • 1 mention a crash, fire or injury
   • filed 2006–2026

   Owners describe tires or valve stems that lose air suddenly, including a valve stem that broke and a tire that blew out at highway speed. Other reports describe tires failing within months of purchase, and a front passenger-side tire detaching without warning, after which the truck went into a ditch. Where mileage is recorded, these failures fall between 4,345 and 48,120 miles, and some happened at highway speed.

   What to check: Check the valve stems, tire date codes and tread condition on all tires, including the spare, for cracks or bulges. Ask whether the tires or valve stems have been replaced and whether the wheels show any damage.

   2 excerpts from owner complaints in NHTSA records

   “Valve stem on tire broke, immediate loss of air, it was an inside dually tire which saved me from getting in a wreck. If it would have been a front tire I would have lost control, at the time I was going 50 MPH. Could have been fatal.”

   NHTSA complaint #10163862, filed 2006-07, 4,345 miles

   “Valve stem (inflation valve) ruptured and caused tire to deflate. This was the second valve stem to rupture on this truck. The valve stem is available for inspection. The valve stem from the first incident is not available.”

   NHTSA complaint #10239605, filed 2008-08, 38,500 miles
5. 5
   Engine

   Turbocharger faults and limp-mode power loss

   • 5 complaints (10%)
   • median 42,700 mi at 3.2 yrs old (5 state mileage, few)
   • filed 2008–2014

   Owners describe a turbocharger or boost-control fault that turns on a check engine light and puts the truck into a derate or limp mode. Complaints say the turbocharger was replaced, and a report describes a boost vane sticking during diagnosis. Other reports describe a limp mode warning while towing and a sudden drop in speed at highway speed, and the dealer was sometimes unable to diagnose the cause. Where mileage is recorded, these reports fall between 2,500 and 99,950 miles, with turbocharger replacements at 34,843 and 63,185 miles.

   What to check: During a pre-purchase inspection, scan for stored turbocharger, boost control, fuel pressure or limp mode codes, and ask for records of any turbocharger replacement. On a test drive, check whether engine power is limited or the warning lamp appears under load.

   2 excerpts from owner complaints in NHTSA records

   “2006 duramax lbz. From new truck intermittently has code p003a - turbocharger boost control position not learned, p0087 low fuel pressure and change fuel filter display on dash. Truck is totally stock. First couple of times when at dealer they would do diagnostics and change fuel filter saying that was it and they would reset all codes. No drivability issues when this happened. Recently (august 5, 2014) while traveling pulling a trailer truck went into derate/limp mode (first time) all codes returned. …”

   NHTSA complaint #10641106, filed 2014-10, 2,500 miles

   “The contact owns a 2006 Chevrolet SILVERADO 3500. The contact stated that while driving at various speeds and towing a trailer, the limp mode warning lamp illuminated as the vehicle decelerated. The vehicle was taken to the dealer where the technician was unable to diagnose the failure. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 99,950 and the current mileage was 205,000.”

   NHTSA complaint #10577462, filed 2014-04, 99,950 miles

Buying note. Have a pre-purchase inspection check the brake lines, transmission cooler lines and tires, and request repair records for brake and transmission work. Any unrepaired leak or brake concern found during the inspection is worth discussing with the seller before deciding.

Summary written with AI from a sample of 49 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.