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Prev Professional Automotive Repair Technical Discussions for March 4, 2010
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Open Help Requests for GM
Help Request Answers
1997 Buick Park Avenue Ultra 3.8L Excessive Emissions, No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G4CU5211V
For a short while customer complained that in wet weather it would buck and misfire on occasion. It needed a tune up and I found arcing and deterioration of the coil pack so I replace all three with module, wires and plugs.(fuel and air filter was done last mo... Trouble codes: P0300 (Random cylinder misfire)
2000 Buick Century Custom 3.1L Surge, Cuts out, Misfire VIN: 2G4WY55J6Y
This vehicle has cuts out, surges and/or missfires with a warm engine at about 2500 RPM under accel (slightly more than light throttle). The condition can be produced best in second gear at about 32mph. It will come and go as the throttle is moved. I can make ...
1981 Chevrolet LUV Sport 1.8L cv axle removal VIN: J8ZBR14N6B
can't get cv axle to pull out.
1986 Chevrolet C70 C7D042 6.0L Unknown VIN: 1GDG7D1B4G
Okay, I'm trying to settle an argument with a couple guys at work here, so if someone can chime in (with photos even better). I understand that the Chevy 366/427 medium duty truck engines have a taller block deck height (10.2) and four ring pistons as opposed ...
1990 Chevrolet C1500 Silverado 5.7L Poor Idle Quality, Hesitation, Cuts out, Misfire VIN: 1GCDC14K3L
Owner states for this visit, when driving into parking lot, experienced power loss like no-fuel. Power returned but engine felt as if missing. During 5 mile drive home, truck ran poorly. At home engine had to be restarted a few times due to stall. Once when re...
1991 Chevrolet Corvette 5.7L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1G1YY3388M
hello again for those who responded a week ago yes this is the same car but different problem ok i have got a code 13 o2 sensor replaced sensor road test bout 10 min of driving the service engine lite comes on same code 13 i have determined that the ecm is not... Trouble codes: 13 (o2 sensor open sort or bad)
1998 Chevrolet C1500 Silverado 5.7L Surge, MIL Lamp on VIN: 1GCFC14R3W
hey guys here is another good one.this truck comes to our shop from two other shops.the other shops have replaced the egrs with oem parts and cleaned the passages at no avail.we have replace the connector due to the fact that the termnials were opened co... Trouble codes: P1404
2001 Chevrolet Monte Carlo SS 3.8L Hesitation, MIL Lamp on VIN: 2G1WX15K55
O.K need some help here.. This car has been in 5 times. And each time it has been the mass air flow sensor, last night it came in running fine, with no light. Customer states... mising/running rough, dies at idle restarts die and eventually run. This mornin... Trouble codes: P0103
2001 Chevrolet Impala 3.4L Piston Rings VIN: 2G1WF55E61
I'm re-ringing this motor and the problem I'm having is that the oil rings that are supposed to be for this engine are to large. The oil ring groove is 3mm and the spec is 4mm. I'm wondering if there is another 3.4 out there that could have been installed at s...
2001 Chevrolet Silverado 1500 LT 4.8L reverse VIN: 1GCEK19V61
Hi guys, Need help on the direction to go with this one, temperature here in Alaska is around 0 def F, when this vehicle is cold and shifted into reverse, you must accelerate to move, when warm there are no problems. I would appreciate some direction t go as...
2003 Chevrolet Impala 3.8L body control VIN: 2G1WF52K03
I need help on this one. This car has a draw on the battery that i cannot get rid of. When I got the car it had a draw of 1.67 amps after sitting about ten minutes. The draw will be there for about ten seconds then go down to normal .04 amps then five to ten s...
2003 Chevrolet S10 4.3L No Start, Stall VIN: 1GCCS19X23
Vehicle came in for inttermittent hard to start/no start. Had code p1626 stored in PCM. In the process of diagnosing, found body computer bad. Replaced and reprogrammed BCM and performed security relearn procedure. Still have the original complaint. Replaced i... Trouble codes: P1626 (vtd start enable signal lost)
2003 Chevrolet Silverado 2500 HD 6.0L Oil pressure VIN: 1GCHK24U43
Thanks in advance. Cust states no oil pressure until runs for 5-10 min. Ran it this way for a week. Put a manual gauge on it-0psi. We pulled the pan to check p-up tube-it was not plugged. Replaced rod and main bearings-they were in bad shape, replace 0-ring on...
2005 Chevrolet Uplander LS 3.5L Power sliding door VIN: 1GNDV23175
the left sliding door intermittenly will operate erratically. Sometimes when you push the open button the door will just unlatch but not move back. Other times it will open all the way then start beeping until you close the door. Sometimes when you close the d...
2002 Saturn Vue 3.0L Misfire, MIL Lamp on VIN: 5GZCZ63BX2
hello to all techs out there ecspecially saturn techs.i have this saturn vue that is flashing mil and setting codes for misfire on cylinders 1,3,5.all on bank 1.found vacuum leak under intake repaired but,it still is setting codes and counting.i pullede timing... Trouble codes: P0301 (misfire cyl 1), P0303 (misfire cyl 3), P0305 (misfire cyl5)
2002 Saturn SL1 1.9L No Start VIN: 2345RRTYUI
Vehicle will start and run for 2 seconds and die, almost like security issue, fuel pressure stay at 45 whilst it dies. Seurity light goes out when the key in is in the ignition key on. No codes as of yet, seems to be shutting off either injector pulse or coil....

Fixes & Summaries for GM
Fix/Summary Answers
2004 Cadillac Escalade ESV 6.0L ipc/brakebooster VIN: 3GYFK66N74
you guys were right once again i thank you for your continued support.the ipc had been replaced with a used one . i reflashed it with current update and cured problem thanks again
2004 Cadillac SRX 3.6L rear lighting VIN: 1GYDE63744
Daniel from Arizona was right! The rear integration module, (turn signal/flasher module here in Canadian land). Replaced it and the problem was gone instantly. Took the module apart and found two cracked solder joints. Kinda of hard to see without a magnify gl...
1994 Chevrolet K1500 5.7L Hesitation, Surge, Cuts out VIN: 2GCEK19K9R
Found out cust dad has been tech for 35 yrs and was unable to repair this vehicle also. We put in a known good ECM and dist assembly and removed throttle body to check for plugged passages and new o2 sensor and tested timing and fuel pressure and were in spec....
1996 Chevrolet Blazer 4.3L distributor cap VIN: 1GNDT13W2T
After checking for worn distributor, which was fine, i found a small Arc track inside cap. this happened to be an aftermarket cap that was replaced when intake manifold gaskets wre done. the distributor screen was also clean and open. After discussing repair o...
1998 Chevrolet Astro LT 4.3L Rear Brakes VIN: 1GCDM19W6W
First off thank you for all the replies.I have no doubt that the proportioning valve was stuck.After posting I tried making ABS stops on gravel,that didn't work.The owner got impatient,mind you the vehicle has been on the lift for 2 days.We ordered a complete ...
2003 Chevrolet Impala 3.4L paskey VIN: 2G1WF52E73
hi thanks for all the help i love this group the fix is in. i replaced the ing. switch as cheap insurance but the fix was getting the right repair info mitchell left out a few crucial words in their service info they tell you to insert key and turn to crank...
2005 Chevrolet Cobalt LS 2.2L MIL Lamp on VIN: 1G1AL12F65
I am going to have to close this with no fix as of yet. The vehicle has not acted up again since my posting. I wish to thank all who replied especially Warren [...], who confirmed what I suspect is the problem (loose terminal connections at the BCM). He also... Trouble codes: P0700 (Trans control system fault), U0101 (Loss of comm with trans control module), U2100 (CAN bus communication), U2103 (Fewer controllers on bus than programmed), U2106 (Loss of communication with transmission control system).
2002 GMC Envoy SLE 4.2L No Start VIN: 1GKDT13592
Thank you very much. Everyone confermed it was in the TB. I learned that this code will shut down the igntion also. Thanks again for the help. Trouble codes: P1515, P1516.
2005 GMC Savana 3500 6.0L Poor Idle Quality, Stall, MIL Lamp on VIN: 1GDHG31UX5
1996 Oldsmobile 88 Royale 3.8L multiple VIN: 1G3HN52K7T
Thanks for all the replies, the problem was confirmed as to what most of you said it was. Poor ground on bus under carpet on driver side near ground G202. Thanks again for all the help.
2000 Oldsmobile Alero GLS 3.4L intake manifold VIN: 1G2NF12E9Y
thx barry from ohio lower intake had slight warp and as a result was cracking upper intake manifold thx to all who replied
2004 Oldsmobile Silhouette GL 3.4L cooling fan VIN: 1GHDX03E24
Thank you for all the replies. The car is not actually overheat, just temp gauge show slightly high. I explain [...] pick up vehicle as it condition, will come back if she loss any coolant. Thank you f...
2000 Saturn SL2 1.9L no 4th gear VIN: 1G8ZK5274Y
i disassembled the trans and put a output shaft in it that had the bushing and all is well again.
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