Van overheats, but only at idle – 2004 GMC Savanna 3500

My van is having a problem with overheating when it idles. That is the only time that it overheats – just at idle. I have replaced the following parts: water pump, radiator cap, fan clutch, and the thermostat. One year ago, the head gasket was replaced and it performed in good condition after that replacement, until now. When it overheats, the coolant goes into the reservoir, but then when it is cool again the coolant does not go back into the radiator. I’m thinking this might mean a clogged radiator. But if that’s the case, then it wouldn’t happen at only idle. What is your professional

– Van overheats, but only at idle

Why doesnt my car want to crank, and start? Ive been stranded for 4 days please help.

I left a passanger in the vehicle and locked it from the inside. I stated to the passenger to not get out because of the alarm. I left for less than 10 minutes and the passanger got out, the alarm rang until it couldnt ring no more and i did not have time to reach the car to insert the key and disable the alarm. I assumed it was okay because it preceded to unlock the vehicle with the key, stepped inside and inserted the key in the ignition and turn. But my car refuses to crank. The power Starts fine. I can honk the horn lower the windows, turn on the air, heck i bought a new battery thinking i

– Why doesnt my car want to crank, and start? Ive been stranded for 4 days please help.

Thumping when going into first gear. If I bypass first and start off in second and then change up to drive it’s ok.

Thumps into first gear if I bypass first and start off in second gear then change up to drive all the other gears work ok and it changes down ok including first when slowing down and stopping

My car has 300000 miles.
My car has an automatic transmission.

– Thumping when going into first gear. If I bypass first and start off in second and then change up to drive it’s ok.

Passenger side door not unlocking manually with key. Key won’t insert into the door. Trunk lock works fine.

Hi, the remote unlocking features of my key stopped working about a year ago and I have been manually unlocking the door ever since. However, recently I have not been able to unlock the driver side door with by inserting the key manually. I have to insert the key into the trunk to unlock the entire car. Whenever I try to insert the key, it feels like it is not the right key to the car. Please advise.

My car has 62000 miles.
My car has an automatic transmission.

– Passenger side door not unlocking manually with key. Key won’t insert into the door. Trunk lock works fine.

Why does my car lose power at 20 miles an hour and 60 miles an hour and my check engine light goes on and off

Sometimes when I'm driving I get to 20 miles an hour and the car starts to lose power then it picks back up after I cut the car off and cut it back on then when I'm getting up to 60 miles an hour does the same and when I cut the car off and cut it back on I get all the power again what's my problem

My car has 154000 miles.
My car has an automatic transmission.

– Why does my car lose power at 20 miles an hour and 60 miles an hour and my check engine light goes on and off