Vehicle price comparison
Mercedes S Class vs GMC Terrain Transmission Control Module prices
Saurabh Kumar
Co-Founder & CTO, Part Price Guide
Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.
Ambika Sharma
Co-Founder & COO, Part Price Guide
12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.
Price face-off
Median price comparison
Condition comparison
How does the price differ by part grade?
Market analysis
Why does the Mercedes S Class transmission control module cost more?
A used Mercedes S Class transmission control module carries a median asking price of $135, which is 41% higher than the GMC Terrain at $96. Supply also plays a role: Mercedes S Class has 32,212 priced listings versus 10,329 for GMC Terrain, and more listings generally mean more choices and more competitive pricing.
Grade A (excellent condition) parts make up 89% of Mercedes S Class listings compared to 68% for the GMC Terrain, so buyers looking for top-condition units will find more options on the Mercedes S Class side.
The GMC Terrain average ($120) runs 25% above its median ($96), indicating a tail of high-priced listings — likely low-mileage or remanufactured units pulling the average up.
At Grade A (excellent) condition, the GMC Terrain is 34% cheaper ($95 vs $144) — the gap widens compared to the overall median difference.
Buyer's checklist
What to check before buying a used transmission control module
- Match OEM hardware and software part numbers exactly, as shift schedules and solenoid driving algorithms differ between gear ratios and engine sizes.
- Determine if the module is standalone, integrated into the PCM/ECM, or mounted internally on the transmission valve body (mechatronic unit).
- Check if the module requires VIN programming, clutch adaptation relearns, or flash updating before normal gear engagement will occur.
- Inspect connector pins for fluid wicking; leaky transmission harness seals can force transmission fluid up into the TCM connector plug pins.
Full price guide
Mercedes S Class Transmission Control Module
$25 – $750 · 32,212 listings
Full price guide
GMC Terrain Transmission Control Module
$20 – $407 · 10,329 listings
Common questions
Mercedes S Class vs GMC Terrain transmission control module FAQ
Is a used Mercedes S Class transmission control module cheaper than a GMC Terrain?
GMC Terrain has the lower median by $39 (41%). The GMC Terrain transmission control module ranges from $20 to $407 across 10,329 listings, while the Mercedes S Class ranges from $25 to $750 across 32,212 listings.
Can I use a Mercedes S Class transmission control module in a GMC Terrain?
This comparison describes pricing, not interchangeability. Even when two parts share similar prices, they may require different engines, trims, electronics, or mounting points. Always match the seller's part number against your VIN before purchasing.
How many listings does this comparison cover?
This comparison draws from 32,212 priced Mercedes S Class listings and 10,329 priced GMC Terrain listings — 42,541 in total.
How does condition grade affect the price?
Part condition significantly impacts price. Grade A (Excellent): Mercedes S Class $144 vs GMC Terrain $95. Grade B (Good): Mercedes S Class $206 vs GMC Terrain $103. Grade C (Fair): Mercedes S Class $59 vs GMC Terrain $69. Grade A parts are in excellent condition, B is good, and C is fair — always confirm grading criteria with the seller.
Are there different trim variants to choose from?
Yes. The Mercedes S Class transmission control module has 1 trim variant and the GMC Terrain has 2. Variants differ by engine size, drivetrain, or part number — matching the right variant is critical for proper fitment.
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