2005 Chevrolet Colorado 2dr Regular Cab ZQ8 LS Rwd SB (2.8L 4cyl 5M)
The truck is an electrical and engine mechanical nightmare. Problems are too many to list. But here is a few common annoying issues. Tires wear on the front end no matter how many or by who the alignment is done by. There is a theft deterrent ignition that will make you late to muliple appointments on a regular basis. Changein the ignition switch is a costly waist of time. The fix for this issue is to wait 10minutes and try again starting the truck. Hopefully it does. The blower for the a/c works when it wants to. Eventually leadeing to a 100% failure burning out the wireing harness also. Dash lighting works 60% of the time. There is a sound made by the engine top end that sounds like the truck is a diesel. This is a gasoline engined vehicle. Exhause manifold cracks if water is splashed on it while driveing. Basically this is why chevrolet is no longer the manufacturer of choice for me. I've been a chevy fan for most of my life. They managed to change my opinion by designeing and building this truck with the help of crackheads.
2005 Chevrolet Colorado 4dr Crew Cab ZQ8 LS Base Rwd SB (3.5L 5cyl 4A)
The Chevy Colorado is an electrical nightmare. If you are considering buying this truck, leave the dealership immediately, and go buy a horse. This truck is complete garbage. The blower works, sometimes, the lights work, sometimes, the radio works, sometimes, and its all stems from GM having a terrible electrical system. I have read forums with people having these issues with the Colorado of any year. So, GM obviously doesn't care enough to fix the issues their vehicles have considering the electrical systems they install have been worthless for over a decade with no recalls. I would recommend buying from any other manufacturer.
Scrap the entire electrical system and install a gerbil in a wheel. It would be more reliable.