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Prev Professional Automotive Repair Technical Discussions for November 12, 2004
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Open Help Requests for GM
Help Request Answers
1994 Chevrolet K3500 Cheyenne 6.5L Stall VIN: 1GCHK39F9R
The vehicle stalls intermittantly when the outside temp is above 90 deg F While driving. I have left the vehicle running, in my stall, and it did stall once but I was not monitoring the fuel shut off solenoid voltage. The outside temp this week has been in the...
1995 Chevrolet Astro CL 4.3L Excessive Emissions, Poor Idle Quality, Misfire VIN: 1GNEL19W9S
Hello fellow techs, looking for an astrovan guru. Customer brought vehicle to us with rough idle, lack of power and black smoke coming out TP. When I drove it, it acted like maybe the firing order was off. Checked this first-ok. Disabled fuel pump and ran veh....
1999 Chevrolet Tahoe 5.7L No Start, Cuts out
car towed in, no start. battery was dead replaced plugs while charging battery.Cust said he flooded it, and plugs had seen better will start and run for few seconds and cut right off even though pump still runs for another few seconds' pinched off ret...
2000 Chevrolet Blazer LS 4.3L temp. control VIN: 1GNCS13WOY
2000 chevy blazer w/ auto a/c. Does not maintain constant temp. Blend door hunts from cold to hot, back and forth. full hot to full cold and back again. Computor code is p0408 temp. control #1 circut. Suspect ECC module. Dealer says the truck do not have ECC m...
2000 Pontiac Grand Am SE 3.4L 2-3 3-4 shifts VIN: 1G2NF12E3Y
We are not a tranny shop.. so we need some help. shifts on this vehicle once warmed up 1 to 2 shifts are fine but 2 to 3 and also 3 to 4 shifts the rpms go up 2 to 3 hundred rpm between shifts. This happens about two to three times then it goes into the gear. ...
2001 Pontiac Sunfire SE 2.2L start and shutdown VIN: 1G2JB12411
hello, i have this sunfire that has no communication with pathfinder. vehicle starts then shuts down like theft system activates. i have battery voltage at dlc orange wire. also have 51ohms resistance at blk/white wire and .003 ohms resistance at black wire. i...

Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Roadmaster Collector's Edition 5.7L lean at idle VIN: 1G4BT52P7T
I had many fine suggestions. I guess I was a little too tired that day to see it for myslef. The suggestions were a MAF being dirty, and I think that I had cleaned that. Apparently, this vehicle will show a false high ECT reading - several people suggested tha... Trouble codes: P0174.
1998 Buick Park Avenue Ultra 3.8L oil pressure gauge VIN: 1G4CU5210W
customer did not return the vehicle to our shop for repairs. unknown fix at this time.
1999 Buick Century Custom 3.1L Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 2G4WS52M5X
thanks for all responses. the ground wire going to the ac clutch circuit through the wiring harness checked out okay with the dvom but after more thorough inspection, it was found the wire was losing continuity. repaired wire and vehicle runs like a champ. onc... Trouble codes: P0300.
1999 Buick Regal GS 3.8L noise in driver side font VIN: 2G4WF5216X
Well I have been working on cars for over 15 years & still would not have thought this noise was coming from a wheel bearing. Looks like I owe Thomas a steak. I really appriciate all the help. Thanks, Tye [...]
1985 Chevrolet Corvette 5.7L overdrive operation VIN: 1GYY0782F5
Sorry it took so long to get back. This car has been gone for a few weeks. It turns out that we had a defective rebuilt ecm which would not see the signal from the switch. Replaced with dealer ecm, Shifts kind of hard, but owner was happy. Thanks to all that s...
1988 Chevrolet K2500 Cheyenne 5.7L No Start VIN: 1GCFK24K0J
The problem was the fuel pump was not installed with hose clamps and it came off the pickup tube. My Diagnoses was poor from the beginning. 1.The owner wanted a fast diagnoses! I did not follow my normal no start procedure. 2.I was told the fuel pump is ne...
1998 Chevrolet C1500 Suburban 5.7L All Lights VIN: 3GNEC16R8W
I would like to thank the 3 responses that we recieved. Michae Whalen mentioned to check the connections and we did that and Kirk [...] said to try a know good switch being a school are resources to known good parts is limited, so we used jumpers to by pass ...
1998 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W5W
This one is done. Most of the replies I receved were to replace fuel pump and wire connector. I had are ready replaced connector so I called federal mogul about the pump I had installed and they had me run a load test on it and yes the pump was bad and then th...
1996 GMC C1500 Suburban 5.7L Steering VIN: 1GKEC16R6T
Hey All, Thanks for the quick response on this one. From the replys I had on this on I tried the ones that were able to be done without parts replacement first, I tried to bleed the air out of the system and that did not do it. I checked the belt and tension...
1978 Pontiac Firebird 5.7L rear springs
Special thanks to Jay [...]'s Auto Clinic.The measurement is 58 1/4 from front to rear shackle bolts (in frame).I have clipped the front of this old panel wagon w/ the front clip out of the same Firebird.I located the front spring mounting by meas...
1996 Pontiac Bonneville SSE 3.8L Electronic VIN: 1G2HZ5217T
thanks for the reasurance from john, benjamin and robert. you guys all confirmed what we saw. the vacuum connector on the programmer had a broken vacuum connector. we where not sure if this was going to be the only problem. the responces where right on the spo...
2002 Pontiac Montana 3.4L Surge, Misfire, MIL Lamp on VIN: 1GMDV13E82
The local dealer agreed to fix this under warranty. They had looked into this problem before the warranty expired. The report from them is that they replaced a crank sensor. There are two on this vehicle, we don't know which one as we already replaced one of t... Trouble codes: P0336 (24X CKP Signal irratic or missing).
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