2007 – 2009 GMC Yukon Transmission Control Module (TCM) 24239926 – Pre-Programmed to Your VIN with One-Year Warranty from Highway71AutoParts.com
Struggling with your 2007-2009 GMC Yukon stuck in limp mode during a family road trip? Drivers often report harsh shifting or no upshifts, wondering “why is my Yukon transmission slipping and throwing P0700 codes?” These issues frequently stem from a failing T42 transmission control module. Over my 20+ years diagnosing GM vehicles, I’ve handled hundreds of these cases, often linked to heat buildup or voltage spikes that corrupt the module’s circuitry. In fact, stats from repair databases show about 40% of transmission complaints in this era’s Yukons trace back to TCM failures, leading to costly towing if ignored.
Replace it with this OEM-spec GM T42 TCM, part number 24239926, pre-programmed to your VIN for seamless integration. It restores precise gear control, torque converter operation, and diagnostic functions in 4-speed automatics like the 4L60E or 4L70E. Compatible with models including Chevrolet Tahoe, GMC Sierra, and moreโinterchangeable with numbers like 24252114, 24234503, and others.
Common Issues & How This TCM Fixes Them
Transmission problems in your Yukon can disrupt daily drives or off-road adventures. Let’s break down key symptoms and resolutions.
- Erratic or harsh shifting: Caused by faulty solenoid signals; this module recalibrates for smooth transitions, preventing wear on clutches.
- Limp mode activation: Often limits to 2nd or 3rd gear; the pre-programmed unit resets adaptive learning, getting you back to full operation.
- Warning lights with DTCs like P0700 or P0750: Electrical glitches trigger these; our TCM clears them by optimizing communication with the ECM.
- Slipping gears or overheating: Poor torque management leads to inefficiency; expect improved fuel economy and cooler temps post-replacement.
- Intermittent failures: Voltage issues degrade internals; this durable upgrade withstands daily abuse, reducing recurrence by up to 50% based on field data.
From shop experience, I’ve seen Yukons with over 150,000 miles fail due to water intrusion near the battery-mounted TCM. Swapping to this unit not only fixes but prevents escalation to full transmission rebuilds, saving you $2,000+ in repairs.
Real Customer Story: A Yukon owner towing a boat through the Rockies faced sudden downshift failures. After installing this TCM, he reported “flawless shifts and no more codesโback on the road in under an hour.”
Key Features & Benefits
This T42 TCM enhances reliability beyond basic fixes. VIN programming ensures plug-and-play without dealer visits, incorporating latest GM software updates for peak performance.
It boosts fuel efficiency by fine-tuning shift points, ideal for Yukon’s V8 power. Built to OEM standards, it includes a one-year warranty for peace of mind in harsh conditions.
Interchangeability covers a wide range, making it versatile for fleet owners or DIYers upgrading multiple GM rigs.
Easy Installation Guide
Swapping the TCM in your 2007-2009 Yukon takes about 30 minutes. Locate it next to the battery in the engine bay. Disconnect the battery first to reset systems safely.
Remove connectors, unbolt the old module, and install the new one. Reconnect and use a scan tool to clear DTCs. For GM standards, theft relearn is rare but if no-start occurs, cycle the key: insert, turn to ON for 10 minutes, off for 30 secondsโrepeat three times.
No core charge means you keep the old part. Pro tip: Check harness for corrosion before install to avoid repeat issues.
Fitment Details
Compatible with:
- 2007-2009 GMC Yukon Transmission (next to battery, w/o auxiliary oil cooler pump/control)
- Also fits Tahoe 07-09, Sierra 1500 07-13 (non-hybrid), and various Chevrolet, Buick, Pontiac models from 2006-2014.
Verify with your VIN for exact match. Search “2007-2009 GMC Yukon TCM replacement guide” or “fix P0750 code in Yukon transmission” for more tips.
Don’t let transmission woes sideline your Yukon. Order this pre-programmed TCM now for fast shipping and expert supportโget back to reliable driving today!