2001 Chevrolet Monte Carlo Problems

What owners report

Owners of this model year report a broad mix of problems, with intermittent turn signals and dashboard/electrical glitches appearing most often in the sampled complaints. A recurring intake manifold gasket coolant leak and plastic intake manifold failures show up across a wide mileage range, and several owners describe steering-shaft noise or ignition-switch stalling. Many complaints date from the vehicle's first few years, while later ones cluster past 100,000 miles.

1. 1
   Exterior lighting

   Turn signals fail or work intermittently

   • 37 complaints (13%)
   • median 75,900 mi at 6.2 yrs old (26 state mileage)
   • filed 2002–2016

   Owners describe turn signals that stop blinking, blink at the wrong speed, or blink only sometimes, with the hazard light button sometimes bringing them back temporarily. Several report the dealer could not reproduce the problem or quoted a replacement signal switch, and some note the vehicle was not covered by the hazard-switch recall. One owner links the behavior to warmer weather and another to a loose fuse contact. Reported from very low mileage up to about 114,000 miles, with several complaints under 80,000 miles.

   What to check: Operate both turn signals and the hazard switch, including after the car has warmed up, and note any slow or fast blinking. Ask whether the multifunction turn signal switch has been replaced.

   2 excerpts from owner complaints in NHTSA records

   “On several occasions I have lost the use of my turn signals. It is very intermittent. A few times they have come back on, but most times not. I tried to compress the prongs holding the fuse, but the signals again failed a week or so later. They're working now, but I never know when they won't. In heavy traffic, this could be a serious problem.”

   NHTSA complaint #10170613, filed 2006-10, 26 miles

   “The turn signals work when they want to, the oil pressure gauge works when it wants to, the sun roof opens if it wants to. It has been to the dealer on this and they say they can't duplicate the failure. These systems don't work more than do work. This has been happening since the car was purchased in 2001. If you can't help I guess I will have to pay now to have it fixed when it should have been fixed under warranty.”

   NHTSA complaint #10136120, filed 2005-09, 2,000 miles
2. 2
   Electrical system

   Stalling and no-start traced to ignition switch

   • 103 complaints (37%)
   • median 112,268 mi at 11.5 yrs old (66 state mileage)
   • 24 mention a crash, fire or injury
   • owner-quoted repair $550 (median of 8 quotes)
   • filed 2001–2019

   Owners describe the engine cutting out while driving, losing power steering and power assist, and sometimes failing to restart; several say the key has to be wiggled to start or to keep accessories working. Some complaints mention the ignition switch recall being performed and the stalling continuing afterward, and others describe a security light and no-start that reset after waiting or disconnecting the battery. Reported from around 57,000 miles up to about 210,000 miles, including complaints filed after the ignition recall work was done.

   Recall 14V400000

   What to check: Ask whether recall 14V400000 was completed and whether the ignition switch itself or only the key was addressed; try starting with a bare key and note any need to wiggle it.

   2 excerpts from owner complaints in NHTSA records

   “Intermittent failure of the Chevrolet passlock system. The engine starts, but dies in one or two seconds and the security light begins flashing - or the engine may not start at all. If I wait 10 to 30 mintues after the first attempt, I can usually get the car restarted but if you do a search online for GM passlock, you'll find numerous websites reporting this issue and suggesting that it may eventually get so bad that the car will not start again. …”

   NHTSA complaint #10572798, filed 2014-03, 178,000 miles

   “While driving my 2001 Monte Carlo ss at 65 miles per hour on the interstate the car would shut off on its own leaving no power steering, brakes, or power to anything. The car did this several times. I contacted GM directly when this started happening. Basically I was told too bad and they couldn't help me. June 5, 2014 summary history display store 01 servc01 total r/o's 1 total serv. Days 3 make cv Chevrolet ln# ro.no. Ro. Date.. Miles. Adv/tech j# t operation code. …”

   NHTSA complaint #10598614, filed 2014-06, 98,000 miles
3. 3
   Engine cooling

   Intake manifold gasket coolant leak

   • 31 complaints (11%)
   • median 50,000 mi at 4.0 yrs old (23 state mileage)
   • 1 mention a crash, fire or injury
   • owner-quoted repair $700 (median of 5 quotes)
   • filed 2002–2020

   Owners report a coolant smell and coolant loss traced to the intake manifold gasket, sometimes together with a low-coolant warning that stays on. Complaints describe dealers replacing upper and lower intake gaskets, and one owner was told the shop sees several of these cars a month with the same leak. Several owners note the repair came after warranty expired. Mostly reported between roughly 36,000 and 60,000 miles, with some complaints at higher mileage.

   Recall 09V116000Recall 15V701000

   What to check: Check the coolant level and look for residue or a sweet smell around the intake area; ask for service records showing whether intake manifold gaskets were replaced.

   2 excerpts from owner complaints in NHTSA records

   “I own a 01 Monte Carlo and 40,000 miles I started getting an anti-freeze leak. My dealership informed me it was a leak in the intake manifold. They also told me they see 2-3 Monte Carlo's a month in with this problem and 5-6 malibu's and lumina's with the same problem. They want $600 to fix since it is past the warrenty. If chevy knows of the problem they should fix it. I did some research and the intake manifold I need is on a 2 month back order due to so many problems. I have only had the car 1 1/2 years.”

   NHTSA complaint #10004970, filed 2003-01, 39,800 miles

   “I purchased this car in 09/01 it has been a problem ever since. Front end needed to be rebuilt at 1200 miles and then again at 2000 miles. Air conditioner has been a constant problem (I was told I needed to park some place else) the manifold gaskets had to be replaced at 48000 miles and now the wiper switch has gone bad. The front end feels real bad, but they claim there is nothing wrong. Just waiting for the front end to fall out from underneath the car on a hot, rainy, july morning. I'm going back to ford. …”

   NHTSA complaint #10060593, filed 2004-03, 1,200 miles
4. 4
   Engine

   Plastic intake manifold cracks and breaks

   • 45 complaints (16%)
   • median 89,989 mi at 10.5 yrs old (38 state mileage)
   • 25 mention a crash, fire or injury
   • owner-quoted repair $700 (median of 5 quotes)
   • filed 2002–2019

   Complaints describe a loud bang or boom from under the hood, followed by rough running, a check engine light, poor acceleration, or smoke and fire. Owners say the plastic upper intake manifold, intake gasket, or fuel pressure regulator was found cracked or blown apart and had to be replaced. Some repairs were done at independent shops after the dealer could not pinpoint the cause. Reported from about 75,000 miles up to roughly 145,000 miles in the sampled complaints.

   Recall 09V116000Recall 15V701000

   What to check: Inspect the plastic intake manifold and fuel pressure regulator area for cracks or fuel smell, and ask whether either has been replaced.

   2 excerpts from owner complaints in NHTSA records

   “2001 Monte Carlo 75,000 miles 3.8l v6 plastic intake manifold broke had to be replaced at a cost of $700.00. This happened before I ever had to have a tune-up on my Monte Carlo. What's wrong with this picture?”

   NHTSA complaint #10273798, filed 2009-06, 75,000 miles

   “The car would lose power at higher RPM's every now and again before problem became an everyday problem. Then one day a loud bang and car ran horrible. Drove it until it wouldn't hardly stay running. Couldn't figure out the problem. Car gave code for faulty EGR valve. Replaced, didn't change anything. The converter had to be replaced, ran better but still not correct. The muffler shop said I had a warped plastic intake, needed to replace. I bought the part and replaced. Still didn't fix the problem completely. …”

   NHTSA complaint #10246764, filed 2008-10, 145,000 miles
5. 5
   Brakes

   Wheel-speed sensor and ABS/traction warnings

   Mentioned in 7 of 60 sampled complaints

   Owners report ABS and traction control warning lights coming on, sometimes after driving through water, along with a vibrating brake pedal or a pedal that goes to the floor. Complaints describe dealers diagnosing an ABS system or wheel sensor fault, and in some cases clearing codes without a lasting fix. Others report premature front rotor wear and steering wheel shake under braking. Reported from roughly 24,000 up to about 148,000 miles, with rotor complaints concentrated under 50,000 miles.

   What to check: Watch for ABS or traction lights during a test drive, including after driving through water, and check the front rotors for wear or vibration when braking.

   2 excerpts from owner complaints in NHTSA records

   “Brake rotors were turned by dealer in june 2004 at 43,000 miles. Steering wheel started shaking, had brakes checked, brakes were fine. Was told the front rotors were no good and needed to be replaced. This occured 3 months and 4,000 miles later. The dealer replaced the rotors, charged $205.00 (did not charge labor). I've noticed on this site many people have complained of the same problem. I've spent over $450.00 in 90 days for brake rotor issues.”

   NHTSA complaint #10092997, filed 2004-09, 47,000 miles

   “Series of high cost repairs at my expense with no warranty: driver infomation center has always been wrong and inaccurate and unfixable; at 24446 miles, replaced front rotors at my expense (; AC at 30825 worked intermittenly and battery light indicator stayed on and serpentine belt worn out (replaced with after market brand ($90) that has lasted perfectly at almost 80,000 miles; engine coolant leak notice by Chevrolet on july 2003 fixed on 7/30-03 at 58009miles; at 34607 vibration from intermid. …”

   NHTSA complaint #10080631, filed 2004-07, 24,046 miles

Buying note. These cars are old enough that condition and service history matter more than the model itself. Ask specifically about intake manifold gasket and plastic manifold repairs, turn signal switch replacement, and whether the ignition switch recall work was completed, and budget for electrical troubleshooting.

Summary written with AI from a sample of 60 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.