GM Repair Guides

Water pump and thermostat symptoms on the Buick Enclave 3.6L, plus GM part numbers by year, coolant specs, torque notes and what to replace together.

P0008 or P0009 on a Buick 3.6L usually means stretched timing chains. Here is exactly what a full kit includes, what it doesn't, and how to verify fitment.

Which GM front-end parts wear together, how to inspect ball joints and tie rods, and how to build one parts list instead of paying for three separate jobs.

Escalade air suspension failed? Compare OEM replacement, remanufactured air struts, and coil conversion by cost, ride quality, warnings and resale.

Cadillac CUE screen delaminating? Compare digitizer-only, mail-in rebuild and full ICS replacement, plus how to identify the right part for your car.

Full brake job parts list for Chevy Tahoe, Suburban, GMC Yukon and Cadillac Escalade: rotors, pads, hardware, fluid and fitment by generation.

What's in a GM brake hardware kit, when slide pins and abutment clips need replacing, and how to confirm the right kit fits your Chevy, GMC or Cadillac.

GM electronic parking brake service mode explained: how to retract the rear caliper piston safely, which scan tool you need, and what parts to buy first.

A shudder or vibration felt through the vehicle, most often around 30-45 mph or during light acceleration, is one of the most commonly reported automatic transmission complaints on modern GM...

Many newer GMC models use an electronic parking brake rather than a traditional cable-and-lever setup, and while it's more convenient day to day, it introduces a few electronic failure points...

Many GMC models include a built-in HomeLink system — usually a set of buttons near the rearview mirror — that can be programmed to operate your garage door, gate, or...

A noticeable loss of power — whether it's sluggish acceleration, a sudden drop while driving, or reduced power specifically under load or towing — usually traces back to one of...

Limp mode (sometimes called limp home mode) is a protective state your GMC's computer activates when it detects a fault serious enough to risk damage if normal operation continued —...

A single non-working accessory, light, or system on your GMC is very often traced back to a single blown fuse, and knowing how to properly find, check, and replace it...

Electronic Stability Control is a safety system that helps keep the vehicle tracking in the intended direction during hard maneuvers, using wheel speed sensors, a steering angle sensor, and a...

There's a meaningful difference between Bluetooth that won't pair at all and Bluetooth that pairs but then fails to fully connect or immediately drops — the second pattern usually points...

IntelliLink is GMC's infotainment platform found on many Sierra, Terrain, Acadia, and Yukon model years, and like any infotainment system, it's prone to freezing, slow response, and app or connectivity...

Bluetooth issues in a Chevy generally fall into three categories: the phone won't pair at all, it pairs but keeps disconnecting, or it stays connected but call/audio quality is poor....

Many newer Chevy models include a built-in 4G/5G WiFi hotspot, and when it stops connecting devices or won't turn on at all, the cause is usually one of a handful...

A power window that won't go up is one of the more disruptive electrical failures, since it leaves your vehicle exposed to weather and security risks until it's fixed. The...

A rhythmic ticking or tapping noise from under the hood, most noticeable at idle or on cold start, is one of the most commonly reported engine noise complaints on GM...

A door that droops when open, squeaks on every swing, or takes extra effort to latch closed almost always points to worn hinge pins or bushings rather than anything wrong...

A tailgate is simple by design, which is exactly why a problem with it is so noticeable — there's no computer to blame, just cables, latches, and hinges that wear...

Seat that won't recall your saved position, or a seat heater that's stopped working (or won't stop)? Here's how to work through both common seat module problems.

Power tailgate or liftgate moving slowly, stopping partway, or not responding at all? Here's how to work through the most common causes on Silverado, Sierra, Tahoe, Yukon, and Suburban.

Rear end sagging overnight, a rough ride, or a compressor that runs constantly trying to keep up? Air ride suspension leaks and compressor failure are a well-known issue on these...

Fan only works on high, or not at all on certain settings? A failed blower motor resistor is one of the most common, most affordable HVAC fixes there is.

Losing refrigerant repeatedly on a 2014-2018 Sierra or Yukon? A known condenser weld-seam crack is one of the most common, well-documented causes.

Sudden, unexplained electrical gremlins after your vehicle sat parked for a while? Rodent damage to the wiring harness is more common than most owners realize.

One door not locking with the rest, or a clicking sound from inside the door? Here's how to diagnose and fix a failing door lock actuator.

Window moving slowly, crooked, or not at all? Here's how to tell whether it's the regulator, the motor, or something simpler.

Phone won't pair, calls keep dropping, or audio cuts out mid-song? Here's how to work through the most common causes on GM's infotainment systems.

Random inputs, phantom touches, or a screen that's gone completely black — GM infotainment failures are almost always the touch layer, not the computer underneath. Here's how to fix it.

Push the 4WD button and nothing happens, or a warning light flashes instead? The shift motor is the most common reason electronic transfer cases fail to engage.

Still common in the used GM truck and SUV fleet, the 6L80/6L90 has its own well-documented weak points. Here's what to watch for on a higher-mileage example.

A sudden "stuck in neutral" feeling at highway speed is the defining 9T65 complaint. Here's why it happens and what your options are.

Co-developed with Ford, the 10L80/10L90 is a complex, software-driven transmission. Here's how its most common complaints actually present and what fixes them.

Hesitation under load, hard restarts, and injector damage can all trace back to a weak or missing lift pump. Here's why this matters so much on the Duramax.

The L5P Duramax raised the bar on power and refinement, but its high-pressure common rail injectors are the engine's most expensive known weak point. Here's what to watch for.

The 2011-2016 LML Duramax is a strong engine, but its EGR cooler and DEF system are its two most common weak points. Here's how to catch them early.

Almost every modern direct-injection GM engine builds carbon on its intake valves over time. Here's why it happens, the symptoms to watch for, and why a bottle of injector cleaner...

The 2.7L Turbo (L3B/L3B-2) in newer Silverado and Sierra trucks has its own set of known issues. Here's what to watch for and how to keep it running right.

Rough idle, knocking, and a sudden oil leak on a Chevy Cruze can point to a cracked piston. Here's how the 1.4L turbo fails, what it costs, and how to...

GM bulletin 20-NA-047 documents a plugged PCV orifice raising crankcase pressure on the 1.5L LYX, with a measurable spec, part numbers and labor times. Includes a correction: this engine takes...

As a newer EV platform, the Sierra EV has had a rockier start for some owners than a decade-proven gas truck would. Here's an honest look at what's actually been...

Every generation of Camaro has a handful of known weak points, and knowing them ahead of time saves you a diagnostic bill. Here are the issues that come up most...

Curb rash and scraped rims are one of the most common cosmetic complaints we hear, especially in tight parking garages or street parking situations. While a scraped rim is usually...

A nail in your tire is annoying enough on its own, but it can also knock your TPMS (Tire Pressure Monitoring System) sensor out of commission depending on where the...