The real problem is the stock RAM 6.7L Cummins grid heater connection. High current passes through the heater lead and bolt, and over time that hardware can melt, loosen, and break away. Once that happens, the broken piece can fall into the intake runner and head for cylinder #6, where piston, valve, head, and cylinder wall damage can follow. This is not just a cold-climate problem. The failure shown here happened on a Southern California truck with just over 100,000 miles, which makes the point: if the lead has play, the bolt may already be partway gone. That is why the jiggle test matters. Catch it before the engine gets started again. Our fix is the Banks Monster-Ram Intake and Killer Grid Heater Upgrade. It replaces the stock grid-heater layout with a high-flow intake plate and coil-heater approach, removing that known bolt risk from the airflow path while also opening up the intake. You get rid of the factory failure point and give the engine a less restricted path to breathe through.
The video begins with a 2017 Ram 3500 owner describing why he brought in his stock 6.7-liter Cummins truck. This was his third Ram, and he said he had generally been very happy with the platform and had not experienced major problems until the check-engine light came on. After pulling fault codes and doing some basic troubleshooting, he concluded that the factory grid heater was failing.
His concern was not simply a warning light. He understood the known failure mode: if the grid-heater hardware deteriorates badly enough, parts can break loose, enter the engine, and damage components such as the number six cylinder, piston, or valves. Rather than take the truck to a dealership and have the same factory-style part installed again, he chose to pursue what he viewed as a permanent fix. He also noted that if the replacement improved airflow and offered any secondary gains in performance or efficiency, that would be an added benefit.
The owner explained that once the fault code pointed to the heater grid, he followed the commonly recommended first inspection step: checking the power connection at the top of the grid heater. Internet troubleshooting had provided a list of possible causes, and the starting point was what he referred to as the jiggle test.
The lead in question is the 12-volt cable that runs directly from the battery to the top of the grid heater. Although it is a 12-volt circuit, the current passing through that connection is high enough that the retaining bolt can be severely stressed. The owner pointed out that if there is any movement at that terminal, the bolt is already beginning to fail. When the connection was checked, the movement was obvious. The looseness indicated that the bolt was already significantly compromised, roughly halfway or more through the failure process.
One important point raised in the discussion is that this problem had long been assumed by some owners to affect mainly trucks that use the grid heater frequently in cold weather. This truck challenged that assumption. It lives in Southern California, where temperatures are generally mild and the grid heater would not be expected to see heavy use.
Even in that environment, the failure was still developing. The truck therefore served as a clear example that the issue is not limited to cold-climate operation. The takeaway was straightforward: owners should not assume they are safe simply because they live in a temperate region or rarely rely on cold-start heating.
Once the looseness was confirmed, the owner decided not to continue driving the truck. His plan was to close everything back up, avoid starting it, and get it to Banks so the problem could be corrected before the hardware failed completely. Because Banks was local to him in Southern California, he was able to move quickly rather than wait on dealership scheduling.
He described the response from Banks as faster than what he expected from the dealership and said he was pleased with the service and customer support. The truck would next appear on a flatbed headed to the Banks facility, emphasizing that the situation had moved beyond routine maintenance and into preventive action to avoid a potentially catastrophic engine event.
Once the truck was at the shop and the intake components were opened up, the extent of the damage became clear. The technicians checked the assembly and immediately found major deterioration at the lead that energizes the grid heater. The metal at the connection had melted, and the damaged portion had begun to sag downward. Because the assembly was upside down during inspection, the melted metal was compared to a stalactite hanging from a cave ceiling.
The retaining bolt itself was in extremely poor condition. As it was handled, it was obvious that it had nearly separated. A fragment broke off during inspection, showing just how close the truck had come to a complete failure. The commentary in the shop made the point plainly: this was a near miss. On a 2017 Ram with just over 100,000 miles, the hardware was already at the point where it could have let go at any time.
The significance of the failure was not cosmetic or limited to a bad electrical connection. The concern was that the compromised bolt and melted hardware could detach and be ingested by the engine. That is why the owner had specifically mentioned the possibility of damage to the piston, valves, or number six cylinder before the truck was even disassembled.
The inspection validated that concern. This was not a minor nuisance fault or an isolated electrical issue that could be ignored. The condition of the parts showed that the truck had effectively dodged a bullet. The hardware was already in the final stages of failure, and continued operation could have turned a manageable intake-system repair into major internal engine damage.
With the factory grid heater removed, the engine bay was shown with the Banks Monster-Ram installed. The visual contrast was noted, but the more important technical point was that the original grid-heater arrangement was gone. In its place, Banks planned to use a vertical coil-style heater located in the intake path where the original problematic hardware would no longer present the same bolt-failure risk.
This replacement strategy addressed the owner's original goal: not merely replacing a failed part with another version of the same design, but eliminating the known weak point. The owner had come in looking for a fix rather than a repeat repair, and the new intake and heater arrangement represented that change in approach.
After seeing the removed parts, the owner said the failed assembly looked exactly like he expected it would. He was not surprised by the appearance because the jiggle test had already indicated what the internal condition was likely to be. The mechanic's teardown simply confirmed the diagnosis.
That final reaction tied the story together. A check-engine light led to fault-code troubleshooting, the jiggle test exposed movement at the grid-heater terminal, and disassembly proved that the connection had melted and the bolt was on the verge of complete separation. The truck arrived before catastrophic failure occurred, and the repair path moved directly toward replacing the factory grid-heater setup with the Banks solution.