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Chevy Truck Repair Questions and Answers

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Question: 1998 Chevrolet Pickup 1500 mileage: 105,000. The brake light stays on intermittently. You can lift the brake pedal with your toe and turn them off. This happens going down the road or when you park the vehicle. The brake light switch is NOT ADJUSTABLE. This switch snaps into place with NO WAY TO ADJUST the plunger travel. I have replaced the switch. It did not help. When I purchased the switch at a Chevy dealer, the parts man first brought out a switch that looked nothing like the one I had removed. When I showed him the one I had removed, he dug around in the back and came out with one that matched the old one. I have had a number of people tell me "Oh yeah I had a Chevy pickup that did that. Any Ideas?

Answer: There are two switches on your brake pedal, one for the brake light switch and one for the cruise control/EMC. It could be that you inadvertently replaced the wrong switch.

Question: 1998 Chevy 1 ton 6.5L Turbo Diesel mileage: 133,000. After the truck is hot, it will not start. The batteries are good and it will crank. When it is cold, it starts without a problem. After it starts, it runs without a problem, but if I have to shut it off, it has to cool down to restart.

Answer: What we have found is that when the starter solenoid gets hot it will not engage the starter. If you don't have one already, check to see if there is a heat shield that can be put on. Also, check with your local supplier to see if there is a high temperature starter solenoid available.

Question: 1993 Chevy pick-up mileage: 195,000.  When a freeze plug goes out is it necessary to replace all the remaining plugs?

Answer: No it is not “necessary” to replace the non-leaking freeze plugs.  However, it will not be long before they probably will be leaking too.  It really is easier to just replace all of them at once.

Question: 1996 Chevy truck Vortec  mileage: 78,000.  I had some problems with my muffler.  It was 2 out, 2 cats, in to one muffler, one output.  I was told flow master was a very good muffler, and I would get better response.   So I got two, 2 chambers, and it felt like I lost some power, but had better throttle response.  Twenty thousand miles later I was told my cats were out, and I could hollow them out until I got the money for new ones, so I did.  Now I have even better response but less power.  Now I have been told that the Vortec 350 has to have backpressure.

Answer: Yes, your engine does require backpressure in the exhaust system to run properly.  The entire engine system and the exhaust are all engineered and tuned together for maximum performance.  Changing the mufflers to lower the backpressure affects the optimum performance of the flow in and out of the intake and exhaust valves.  In doing so, you have altered the balance that was designed.  We would recommend returning to the original equipment.

Question: 2003 Chevy Truck 1500 mileage: 32,000.  Hello, My Chevy has been running great until it just quit.  After checking for spark, gas etc, I discovered there is no voltage at the fuel relay, fuse, and fuel pump.  I can't find any connections broken or loose.  I am not getting fuel to the TBI at all.  All the fuses are good.  I tried putting power to the ALDL connector "G" and still nothing.  Any ideas?

Answer: Check fusible links as one may have failed.

Question: 1990 Chevy 1/2-ton pickup mileage: 90,000. The truck has throttle body injection and no trouble codes. Has new computer. I can remove wire and set timing, reattach wire and it will advance properly. Turn off engine and restart and it spits and sputters as if it has lost its memory. Runs better with the Prom removed, yes it has been changed too.

Answer: Check the ground connections for the ECM. If this checks okay, try changing the ECM.

Answer: It sounds as if the torque converter was not installed all the way into the transmission.  If you have bolted the engine and transmission together, there is a chance you may have damaged the front pump of the transmission.

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