Expert GMC Transmission Fluid Replacement Service

It is important to take proper care of your GMC vehicle’s transmission system for optimal performance and durability. The Car Lab Auto Repair Center believes that transmission fluid changes are essential to vehicle maintenance to avoid expensive repairs resulting from improper gear shifting. Our professional staff is ready to provide professional and detailed GMC transmission fluid replacement to maintain your vehicle’s condition. Below is a detailed breakdown of our thorough process for replacing transmission fluid in your GMC.

Initial Consultation: The process begins with a consultation, during which we gather detailed information about any transmission issues or symptoms you may have noticed in your GMC. These symptoms may include unusual noises, delayed shifting, or gear slipping. We ask about the frequency and specific circumstances of these issues and review the vehicle’s service history for past transmission maintenance. This allows us to identify any potential underlying issues that need attention during the fluid replacement service.

Pre-Service Inspection: Our team inspects the GMC transmission system before we start changing the transmission fluid. We examine it for leakage or visible wear or damage, particularly around the gearbox, gaskets, and seals. We also check the fluid level with the dipstick or the fill plug and note the color, texture, and smell of the current fluid. These observations provide a baseline that allows us to assess the impact of the fluid replacement after the service.

Transmission Fluid Drain: Slowly and safely, the drain plug is unscrewed, and a new drain pan is put under the transmission to capture the old oil. When the fluid is out, we look at the bottom of the transmission pan for contaminants like dirt or metal particles, which can point to internal issues. After draining, the pan is cleaned thoroughly, and any findings are documented for further analysis if needed.

Filter Replacement: After that, our technicians remove the old transmission filter and drain the excess fluid. We check the filter for contaminants or debris to ensure none are in your GMC’s transmission. Next, the filter area and other parts are cleaned, and a new filter is installed as recommended by the manufacturer.

Gasket Replacement: The old gasket is carefully removed from the transmission pan and mounting surfaces to avoid leaving residues that may later cause problems in sealing. If needed, we remove the gasket using a gasket scraper and clean the surfaces. If necessary, a thin layer of gasket sealant is applied on top to ensure the gasket and other parts fit tightly and do not leak.

Reassembly and Refill: Following the replacement of the new gasket, we replace the transmission pan and re-tighten all accommodating bolts in a crisscross pattern to avoid exerting pressure and consequent leakage. We then replace the lost transmission fluid with the type and volume suitable for your GMC model. The liquid’s volume is measured and topped up to the right level.

Final Inspection and Test Drive: We then returned the transmission and filled it with oil to see if it performed a smooth shift during our preliminary test drive. After completing the test drive, we again checked the fluid level and searched for any signs of leakage. We document the service’s details, including the type and quantity of fluid used, filter replacements, and any noteworthy observations throughout the process.