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Engine coolingPart report

2004 Chevrolet Silverado 2500 Engine cooling Problems

Complaints
23about this part
Share
6%of 368 total for the year
Median mileage
73,900miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 23 complaints about the engine cooling of the 2004 Chevrolet Silverado 2500, 6% of the 368 complaints for this model year. Where a mileage was given, the median is 73,900 miles. 2 a fire, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The exhaust manifold bolts are broken on my 2004 Chevrolet 2500 hd truck. They are also broken on my sons 2004 gmc 2500 hd and my brothers 2005 gmc 2500hd. Something is wrong with that and something should be done before they catch fire.”

NHTSA complaint #10396693, filed 2011-04, 90,000 miles

“Recently I developed an exhaust leak near the front of the exhaust system near the engine. Upon inspection I found the back manifold bolt had been broken off on the drivers side (I may also have a broken bolt on the passenger side as well). I took the vehicle to my locally respected mechanic with the intention of having the broken bolt removed and a new one installed. I was notified that this was a common problem with these GM vehicles (2004 silverado 2500hd). …”

NHTSA complaint #10378865, filed 2011-01, 73,800 miles

“I own a 2004 Chevrolet SILVERADO 2500. It has a broken exhaust manifold bolt. After researching this problem on the internet, I found there are approximately 12,000,000 GM vehicles with this problem. Why hasn't the NHTSA issued a recall on these vehicles? It seems to me that the epa would have done something about as the broken bolt is allowing exhaust into the air without going through the converter. I don't know at what mileage the bolt broke or at what speed I was going when it happened.”

NHTSA complaint #10407762, filed 2011-06, 85,000 miles

“This is how it started.. I have a 2004 chevy SILVERADO 2500 hd. As I drove down the road the doors would lock and unlock on their own, and the truck would lose RPM's and would act as if the truck shut off and restarted itself. Also the check engine light would blink with the locking and unlocking of the doors. Did this off and on a few times as we babied it home. Got it home in the driveway and it threw 2 codes camshaft position sensor high volts and low volts. So we replaced the camshaft position sensor. Truck drove fine for 4 days. …”

NHTSA complaint #10274540, filed 2009-06, 81,098 miles

“Bought the truck in october of 2009, took to dealership on 12/17/2009 with complaints mileage of 96,764 of low engine power, hard to start truck,,,,glow plugs were bad corroded park neutral switch, corrosion on brake lines..paid $ 3,600 in repairs then around late september 9-28-2010truck died a fourway intersection...was almost hit by a car...towed to nearest service fleet source...found out injectors were bad...work was started for repairs...then I found out the glow plugs...which I paid for already...and the injectors were service bulletins...called fleet told them to stop…”

NHTSA complaint #10360425, filed 2010-10, 96,764 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
202312%
202233%
202044%
201934%
201812%
201511%
201111%
200912%
200853%
2007136%
2006127%
2005166%
2004236%
2003164%
20024312%
20017820%
2000118%
199934%
199823%
1997711%

Other parts of the 2004 Chevrolet Silverado 2500

Brakes
168 complaints
Electrical system
105 complaints
Fuel system
26 complaints
Steering
16 complaints
Transmission and drivetrain
15 complaints
Engine
14 complaints
Suspension
12 complaints
Wheels
9 complaints
Vehicle speed control
6 complaints
Other or unknown
5 complaints
Tires
5 complaints
Air bags
4 complaints

← All problems reported for the 2004 Chevrolet Silverado 2500

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology