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Prev Professional Automotive Repair Technical Discussions for April 1, 2011
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Open Help Requests for GM
Help Request Answers
1995 Cadillac Eldorado 4.6L Mechanical VIN: 1G6EL12Y8F
I have this eldo rado that has a oil leak. rear main sealn and oil pan gasket. mitchell says to do these you pull engine or remove trans. has anyone out there done this and which way shoud i go.
1997 Chevrolet C1500 Silverado 4.3L No Start, Stall, MIL Lamp on VIN: 1GCEC14W5V
I bought this truck from a customer who towed it in at 62000 miles with a no start issue. We checked and found it needed a fuel pump. The customer supplied an aftremarket pump (unknown brand) which was fitted. The vehicle ran great and was then taken over by m... Trouble codes: P0134 (Oxy.sensor), P0135 (Oxy sensor)
2000 Chevrolet Astro LS 4.3L Misfire VIN: 1GNDM19W51
po300 c0de mistfire on cilynder #3 the van caime in wt a burn valve on #3 cilynder we d the valve job, new delco plugs,wires,cap,rotor,new injectors, we check the cat,replace one o2 sen sor, and everyting is good but wen it get hat #3 CILYNDER STAR to mist, an...
2002 Chevrolet Impala 3.8L races VIN: 2G1WH55K72
Hi group. This vehicle will slowly raise idle to 2500rpm and above.I have a Tech2 and all the pids seem normal except rpm and desired rpm which is about 650-700. The actual rpm slowly climbs up along with the IAC counts which go up to around 170 and never lowe...
2004 Chevrolet Impala 3.8L noise VIN: 2G1WF55K05
we have this 2004 impala, every time we slow down to stop, just before it stops at about 5 to 10 mph we hear a what can be described as a burping noise. It happens either with the brakes applied or coasting to stop without braking. weve replaced front brakes a...
2006 Chevrolet Silverado 2500 HD LT 6.0L Abs VIN: 1GCHK29U56
This truck sets a C0035 left front wheel speed sensor code, I have replaced the EBCM because it was cracked, and the left front speed sensor because the wires were rubbed. If you clear the codes and test drive the code sets emmediatly and the sensor never read...
2008 Chevrolet Suburban 1500 LT 5.3L Door lock, Radio VIN: 3GNFK16338
We see no L/F, R/R, L/R door lock operation. Radio is playing out of front speakers only. Customer states it had a blown fuse but it was not for the door lock controls. He didn't tell me which fuse it was. I checked all fuses and they are good. I found a TSB a...
1995 GMC C1500 Sierra SL 5.7L Temp Door VIN: 2GTEC19K2S
This is a sublet from another shop. The problem is that temp door goes to full hot and stays there no matter what you do with temp control or air door position control. Other shop replaced heater core and then brought it to me because it always remains hot. Th...
2004 GMC Sierra 1500 SLE 5.3L Poor Idle Quality, Misfire VIN: 2GTEK19T04
This truck has a rough idle and a consistent misfire on #6 and a inconsistent misfire showing on #5. New wires & plugs, swapped coils with other cylinder with no change. There are TSBs for bad ground on head, alarm system interference, intake gaskets, cracked ... Trouble codes: P0300
1997 Saturn SL1 1.9L No Start VIN: IG8ZH5282V
After Extensive checking found burnt wire, (looks like ground wire at ignition switch) followed to grounding block near bulk head under dash seems to stop there have computer data and intermittently will try to start and has started and ran for awhile till shu... Trouble codes: P1599, P0512 (testing and results)
2004 Saturn Vue 3.5L Unknown VIN: 5GZCZ53424
This vehicle is equipped with the Honda engine and transmission. I have not experienced the customer's concern and there are no codes set, and the transmission fluid is clean and full. But on a fairly consistent basis, when the vehicle is first started in the ...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Cadillac DeVille Concours 4.6L Misfire VIN: 1G6KF5299V
thank you everyone for all your help.most of the replies i recieved pointing to head gasket on #5 cylinder. over the weekend i parked the car with cooling system pressurized.monday morning pressure gauge down to 10 psi.disconnect ignition module and crank the ...
1998 Chevrolet Blazer 4.3L Mil VIN: 1GNCS13W5W
Well, this blazer is being sold to a customer. We haven't gotten it to act up since I replaced the fuel tank pressure sensor and gas cap, but also haven't been able to drive it much so I guess time will tell the outcome of this one. Like I said previously, aft... Trouble codes: P0446.
1998 Chevrolet Cavalier 2.2L reverse VIN: 1G1JC1247W
Well this one was an easy fix. I was at the parts house and talked to Russell from A.T.C. in Billings MT. They only do transmissions. He told me to pull the pan and be certain that the reverse/low clutch feed tube was in the proper postition. It wasn't. The tu...
2000 Pontiac Firebird Formula 5.7L Mechanical VIN: 2G2FV22G6Y
Customer declined repair at this time. Removed transmission a second time and ran engine for a longer period. The noise did come back with transmission removed. Told customer it was in engine. Not for sure what is causing noise. Alex from georgia said roller l...
2005 Pontiac Sunfire 2.2L Steering VIN: 3G2JB12F05
2006 Pontiac Grand Prix 3.8L No Start, MIL Lamp on VIN: 2G2WP55216
Okay we replaced the MAF sensor on this car as a few people have suggested and let the customer drive it for a month and all is well and working fine. Trouble codes: P0068 (Map maf sensor correlation), P0101 (Maf circuit range performance problem).
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