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Hummer Repair

Repair and maintenance information for Hummer vehicles

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Hummer Repair Information

We'll help you out with everything you need to know about your Hummer vehicle.


Brake Pad Issues

Hummers commonly face brake issues. Most of the time, the vehicle's brake pads wear out unevenly-thus compromising how easily you can put your vehicle to a stop. Brake service on Hummers, however, are the same; the only difference is that the rotors could be found in different locations. Typically, the rotors on the hummer are commonly mounted next to the differential with a shaft that ties it to the hubs at each wheel.

Brake pad replacement, whether it be for the front or back, is almost the same. Before you replace your brake pads, however, be sure to also equip yourself with: a 3/8-inch drive ratchet, a C-clamp, some brake anti-squeal paste, and some screwdrivers and some socket and ratchet sets. First, park your vehicle on a flat surface and, using a jack, lift up the front or back part of your truck (whichever wheel is affected). Then, remove the affected wheel. Afterwards, remove the brake caliper together with its mounting bolts or pins. Once that's done, proceed by removing your stock brake pads and replacing them with new ones. After installing your new brake pad/s, re-install your wheel and torque the lug nuts according to your manufacturer's specifications. Be sure to road test your vehicle once you've replaced your brake pads to ensure the kinks have been worked out.

Windshield Wiper Motor Module Failure

This problem is common among Hummers. Some of these vehicles' wiper modules are vulnerable to water. Over time, water enters into the module-causing the wiper to work intermittently. Worse, they could also become inoperative.

However, replacing a new wiper motor module is fairly easy. You'll need a replacement module, a socket and ratchet set, a 3/8-inch drive ratchet, a screwdriver, and a test light. Start by locating your wiper motor in the engine compartment (usually it's on the firewall). Once you've gained access to your wiper motor, be sure to disconnect your battery's negative cable-so that you won't get grounded with electricity. Once that's done, you should then disconnect the motor's wiring harness and then replace your stock module. Reassemble the bolts and reconnect the battery's negative cable and you're done. Remember to test the wiper motor at all speeds to be sure that your replacement works.

Steering Problems

Before you start any replacements or diagnostics, make sure that your inside and outside intermediate steering shaft universals are greased. Afterwards, if you are still having a hard time steering your truck, check your vehicle's power steering fluid level.

You should also check if your steering shaft U-joints can move freely. These joints can be found under the dash and under the hood. Then, make sure that your steering wheel mounting bolts are present and tight. These bolts are placed inside the dash area. You could remove the kick plate above the driver's feet and see if the two mounting bolts are also tight. If they are all good, proceed and check if there is something wrong with your steering linkages, etc. Then, replace if necessary.


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