Chevy Silverado HD: 3 Most Common Problems

Written By JD Diagnostics & Diesel Repair on Nov 27, 2019

Wondering what to look out for with your Silverado? Here are the most common problems:

While the 6.6L Duramax Diesel found in Chevrolet Silverado HD pickup trucks is a very reliable engine there are a few recurring problems to look out for.

1. Fuel starvation due to air in fuel lines

The Duramax fuel system on Chevrolet Silverado HD pickup trucks utilizes a single high-pressure fuel pump that pulls fuel from the tank and pushes it under pressure to the injectors. This creates a high vacuum between the pump and the tank that is susceptible to pulling air into the fuel system, much like a broken drinking straw does, at some common points. The most likely suspects for air seepage are a cracked fuel filter housing, failed O-rings, or leaking gaskets. There are also reports of difficulty when priming the fuel system after changing fuel filters.

2. Water pump failure

Duramax water pump failure between 80,000 and 100,000 miles is a somewhat common problem. This is likely due to issues inherent with the water pump manufacturer more so than Chevrolet but that’s of little consolation when your water pump fails.

3. Overheating

While overheating does not occur in every Duramax, it does appear to be more prevalent than in other diesel engines. Of course, the already mentioned water pump failure is a common culprit to overheating, but towing heavy loads during summer heat can lead to overheating conditions as well. Overheating is often caused by a faulty fan clutch which prevents adequate airflow through the radiator to keep the system operating at the desired temperature. An overly dirty or clogged radiator can also contribute to the problem, preventing the free flow of air required to keep the engine coolant cool.

JD Diagnostics & Diesel Repair is located in Abbotsford, BC, Canada and serves the local Fraser Valley area. Contact us today for services ranging from routine maintenance to full rebuilds.

Looking for more power?

Our partner company, 3K Calibrations, specializes in ECM tuning for any and all diesel engine vehicles. Additionally, if you find yourself with EGR/DPF/UREA problems they provide services to troubleshoot these issues.

Want to find out more about available ECM tunes?

Give us a call.

604-799-3835

Send us an email.

Contact

Diesel Resources

Tips and tricks to keep you rolling in style.

December 29, 2022

What Can Go Wrong With the 7.3 Powerstroke EGR System?

The 7.3 Powerstroke engine is a reliable and durable engine that has been used in Ford trucks for decades. However, like any engine, there are certain components that can fail or malfunction over time. One of these components is the EGR (Exhaust Gas Recirculation) system.

Read Post >
October 25, 2022

5 Common Pickup Truck Transmission Problems and How to Avoid Them

Your pickup truck's gearbox is the device that transfers engine power to the wheels. The tremendous heat and friction from numerous parts of your pickup truck regularly put a lot of strain on the gearbox. Fortunately, many of these transmission issues may be identified early if you know what to look for while driving about regularly.

Read Post >
September 6, 2022

Ford F-250 vs. RAM 2500 - Ultimate Comparison

You may have already evaluated the 2022 Ford F-250 and 2022 Ram 2500 if you need a reliable pickup truck for your next ride. They're both high-quality trucks from reputable manufacturers, built to haul, and out perform other models on the market. Both the Ford F-250 and the RAM 2500 are regular front-runners in their segment. 

Read Post >

Get In Touch

Give us a call below to speak with one of our service representatives.

Call Us

Phone Number:

(604) 799-3835

Abbotsford Location

104-663 Sumas Way
Abbotsford, BC V2S 7P4

Hours

Monday | 8a.m. – 4:30p.m.
Tuesday | 8a.m. – 4:30p.m.
Wednesday | 8a.m. – 4:30p.m.
Thursday | 8a.m. – 4:30p.m.
Friday | 8a.m. – 4:30p.m
Saturday | Closed
Sunday | Closed