Reviews of GENERAL MOTORS parts For Business

I have a family member with a 2004 4.2 w/170,000 miles. It’s been very reliable. It had some evac valve replaced many years ago and I recently did the water pump as the bearing had some play, but no leak. Almost zero rust. An exhaust heat shield rattles currently. It wouldn’t shift into 4WD for a time, but new transfer case fluid fixed that - (it’s not maintained super well).

Mom had an Envoy XUV for 10 years, only issue in that period was the starter, gauge cluster stepper motor, and the divider window motor. I had a Trailblazer SS for four years, would still have it if I hadn't sold it to buy my house, but in that time I did front hubs, steering wheel position sensor and a pass side wheel speed sensor. That was it. ZERO other issues.

I actually installed a GM Ignition coil on my CM400 to replace the old Honda one.

And, since the GM LS2 coils use a +5v sequencer trigger and they work perfect with an ME7 ecu, it seems like running a scope test is a bit redundant.

The 4.0 Aurora V8, essentially a modified Northstar V8, comes with the dreaded headgasket (headbolt) issue. Having this car be a "bottom breather" with an engine that would basically warp when it got too hot was a stupid move. My family owned 3 of these and all 3 suffered the same fate. Horrible design choices.

My biggest issues with older trucks: 1) Emissions choked stock engines and/or the TBI motors in the GM trucks which eat valve stem seals 2) Brakes. My Dad's '88 C2500 never felt like it had enough brake when towing a reasonable load, even with trailer brakes.

GM iron duke and pushrod 2.2. Underwhelming? I can attest to that. Had the 2.2L 118HP 4-cylinder engine in my first car. fan bearings decided to give up one day on the highway. Head gasket job twice in 85,000 miles.

GM 3.6L LY7 V6 Timing chain issues, oil starvation, sounds terrible.

the GM dex-cool is fucking garbage. You do not want that shit in your car. Take that jug and have it recycled.

Had an appetite for alternators, as they put it behind the rear cylinder head and tried to keep it cool with some little rubber/plastic air duct. Failboat. We sold the car with its third alternator, each failure attributed to failure of the rear bearings.