Picking an OBS exhaust without overspending or living with drone. How the GMT400 system is laid out, real cat-back vs full-system options, and how to choose a muffler and pipe size.
OBS Chevy Exhaust System Guide (1988–1998 GMT400 Silverado & Sierra) Read Post »
A clogged fuel filter causes hard starts, hesitation and power loss on OBS trucks. Here’s where the GMT400 filter lives, the ACDelco GF652A OEM part reference, and how to change it safely.
GMT400 / OBS Fuel Filter Replacement (1988–1998 Chevy & GMC) Read Post »
Which GMT400 years to buy and which to walk away from — TBI vs Vortec, 4L60E weak points, rust spots and the fuel pump failures to check before you hand over money.
Most 1996–1998 Vortec 5.7 no-starts come down to one number: fuel pressure. The CSFI poppet injectors physically stay closed below roughly 50 psi. Here’s the test, the spec, and when the spider upgrade makes sense.
1996–1998 Vortec 5.7 Hard Start or No-Start: CSFI Fuel Pressure Diagnosis Read Post »
OBS door rod clip part numbers explained, including GM 15053341. What door handle rod clips are, why they break, and how to verify fitment before you buy.
OBS Door Rod Clip Part Numbers: OEM Door Handle Rod Clips for Chevy & GMC Trucks Read Post »
GMT400 vs GMT800 Suburban comes down to feel, simplicity, comfort, and use. Here’s how each platform stacks up for real truck guys.
GMT400 vs GMT800 Suburban: Which Wins? Read Post »
A practical, platform-specific restoration guide for full-size Chevy and GMC trucks — Squarebody, OBS/GMT400, and GMT800. What to buy, how to inspect it, and the exact order to do the work so you don’t spend twice.
Classic Chevy & GMC Truck Restoration Guide (Squarebody, OBS, GMT800) Read Post »
Learn how to regear GMT400 axles the right way, from ratio choice and setup basics to break-in, costs, tools, and common mistakes to avoid.
How to Regear GMT400 Axles Right Read Post »
Why is my OBS Chevy overheating? Learn the common causes, what to check first, and how to fix cooling system problems before damage hits.
Why Is My OBS Chevy Overheating? Read Post »
Can GMT400 fit 33s? Yes, but wheel width, backspacing, lift, and trimming decide whether they rub or clear on your Chevy or GMC.
Can GMT400 Fit 33s? What Really Works Read Post »
