20 Most Recent 2002 Chevrolet TrailBlazer Questions & Answers

I would begin by looking at the fuses. Check for one labeled ECM or PCM... Those are the computers that control engine management. There are also fuses for the coil packs and fuel injectors.

Hello. To fix this issue before you replace your throttle body. Open your fuse box and make sure the 3 shiny bolts are tight as they act as ground and come lose from vibration.. let me know if you need more help.

Question edited for clarity. Question moved to model category. It appears to be a software error that only the dealership or an auto electrician can fix! https://www.google.com/search?q=2002+trailblazer+radio+cal+error ..

On the 2002 Chevrolet Trailblazer with a 3.4L or a 4.3L the oil capacity is 4.5 quarts.

You will have to pull the transmission fluid pan off and change the automatic transmission shift solenoids change both 1-2 and 2-3 shift solenoids you also need to change out the torque converter clutch solenoid. it is spring-loaded watch the shift valve when changing the tcc solenoid and pull your dipstick out before putting the pan back on makes it easier make sure to reset codes on the computer after you are done.

It would not be an acceptable thing to comment on this subject as there are people out there that read this public forum that may use any advice offered for a criminal intenstion. Ask your vehicle dealer.

Same thing happened to me on my 2002 trailblazer. The last few wraps of the cable was corroded to the point that it wouldn't unwind with the tool supplied. First thing to do is cut the crimped end of the cable off with a grinder or cut off wheel but don't forget to support the spare. This will get the spare out of your way then simply take out the 3 mounting bolts for the cable hoist. At this point you could buy a new cable hoist from the dealer and install it yourself or you might be able to do what I did. I managed to pull and remove about a foot of the rusted cable, slide the rectangular metal piece, that actually holds the spare at the center of the wheel, back on the cable and attach a 1/4" cable clamp to the end of the cable which of course must be in good condition. There should still be enough cable to re-attach your spare to it and hoist it back up. Don't forget to lube things up so it won't happen again. Good luck. (buying a new one sounds better, doesn't it?)
mikethemedic in Hawley,Pa.

Shift Lock Release
This vehicle is equipped with a shift lock release system.
If your vehicle has a dead battery and you need to
have your vehicle towed, there is a shift lock release
lever that will allow you to move the shift lever out
of PARK (P).
To access the shift lock release lever, do the following:
1. Press on the sides of the boot around the shift lever
to release the boot.
2. Lift up the boot on the shift lever and you will see an
orange lever.
3. Press the orange lever down and move the shift lever
out of PARK (P).
4. Snap the shift lever boot back in place.

brake light switch does lights and interlock to shift out of park dont know what 'safety part' your asking about

no it doesnt

On the Air tube intake halfway between air filter and intake!

dammed electronics ,bane of my life so your not the only one and in cases like this i can only suggest you bite the bullet and take vehicle to a main dealer .sorry i know this isnt the answer your looking for but from experiance certain things on modern motors you cannot do your self

Sounds like the engine is not firing on all cylinders. Check the spark polugs and cables.

You will either have to have a metal shop fabricate new mounts and have them grafted in, cut good ones out of a salvage truck and have them grafted in, or completely replace the frame with a good used one out of a salvage yard.

Mine was doing same thing. 03 trailblazer. Mine ended up being the 4 prong connector sensor gear was out of alignment. You have to take the entire latch out to remove the sensors. You can then rotate or realign the gear for the gate ajar switch. This was after realigning the gears.

I just had the same problem. I took the cover off, saw the white bulb base, twisted it to take it out, but it popped back inside the door. I got it out, but it wouldn't pull through, so I twisted it back in place and went to Autozone to get new bulb. Once I saw the new bulb, it was obvious, just the bulb itself pulls out. There's so little room to work, I couldn't get it with just my fingers - - maybe rubber gloves would have worked, but I used pliers, lightly, wiggled it a little and it popped right out. I had a similar issue once with the taillight bulb and had to break the bulb and then grip the remaining filament wires with pliers to get it out, so that was my backup plan, just in case.

Hope this helps others.

The switch is wear I would start.

beleive its 2.5 oz

If you are asking how to do this, it is not easy, it is very complex and takes a long time. The big points: Drain the coolant, disconnect battery, take off the intake manifold, take of the exhaust manifold, remove the head, clean the head and check for warp and cracks, clean the block and remove all debris from cylinders, install gasket, put head back on, put manifolds back on, replace coolant, change oil, connect the battery. You may have issues with bolts that break or strip out the block, you should send the head in to be checked, the valves and springs should be checked and those seals replaced, you need special tools and reference materials.

Assuming you have a 4.2L engine here is the location.


Hope this helps out,
if so please rate my answers.
Brett