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Prev Professional Automotive Repair Technical Discussions for August 8, 2013
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Open Help Requests for GM
Help Request Answers
1998 Chevrolet K1500 Cheyenne 5.7L Compression VIN: 2GCEK19R3W
Installed new water road tested to make sure no leaks within a mile starts missing bad Cylinder 5 and 7 5 is a dead miss pulled plugs cylinder 1 3 and 7 around 150 7 is around 30lbs? did fuel injector drop test seems good pulled valve cover after talking to cu...
1999 Chevrolet Astro 4.3L Excessive Emissions VIN: 1GCDM19W2X
I need some help.The van working ok.No code.Just cat is not ready for test.All outher systems are ready.I replaced cat and clear the code.Customer drove van for 3 monts .System are not ready.We replace thermostat and rear O2 sensor but noting beter.Thanks for ...
1999 Chevrolet Silverado 2500 6.0L Poor Idle Quality VIN: 1GCFC29U6X
Pickup came in for a hard start and rough running. Checked fuel pressure regulator first thing (and many times since) clean and dry. Found fuel pressure bleeding off and slow to build fuel pressure, replaced pump. Hard start problem solved. Sometimes when star...
2004 Chevrolet Silverado 3500 LS 6.6L Hesitation, MIL Lamp on, Low power VIN: 1GBJC34254
Well this one has me stumped, truck is a 2004.5 lly duramax that came in for low power for a long time. Not for shure how long, and check engine light on.It had p0046 and p2563 could not command any movement of boost solenoid or vps with my tech 2. pulled boos... Trouble codes: P0046 (Turbocharger boost control position performance)
2005 Chevrolet Malibu 2.2L Cuts out, Misfire VIN: 1G1ZS52F85
Vehicle idles smooth, has lack of power accelerating (no misfires) until 4000 rpm where it wont rev any higher and cuts out randomly misfiring on all cylinders. CEL starts flashing catalyst damaging until you let off throttle and light goes off and car returns... Trouble codes: P0300 (Multiple random missfire)
2006 Chevrolet Impala LT 3.5L lost com with bcm VIN: 2G1WT55K76
car came in as a no start no crank checked for codes and found uo 140 lost communication with bcm and po 615 starter relay control circuit I pulled starter relay and installed relay tester and if I jump the relay I can get it to crank checked all fuses and the...
2005 GMC Sierra 2500 HD SLE 8.1L timing chain VIN: 1GTHK23G95
Need help from GM guys, this 8100 is getting a complete rebuild and we were installing the timing chain and new gears but when there installed there's a tremendous amount of slack compared to other previous engines. this is a roller type chain kinda beefy, was...
1998 Oldsmobile Aurora 4.0L dash lights VIN: 1G3GR62C0W
Greetings. When you turn headlights on,either by headlight switch or twilight sentinal turning them on, the lights in radio, heater control panel, etc go out. As soon as you turn headlights off, they come back on. Previous shop replaced headlight switch and pa...
2006 Pontiac Torrent 3.4L tailights,instrment panel lights VIN: 2CKDL73F36
Hello all, just trying to get information on this vehicle.The problem is instrument panel,heater/radio control ,tailights and park lights none of them worked.I thought its just simple as replacing a blown fuse,all fuse are good.Can anybody guide me where to st...

Fixes & Summaries for GM
Fix/Summary Answers
2003 Chevrolet Tahoe LS 5.3L Instr Cluster VIN: 1GNEK13T13
Thanks to all that responded!! The suggested fixes were pretty much split down the middle...Instrument Cluster and Ignition Switch. We pulled the cluster out again and found that if we pushed on the back in just the right spot we could get it to come back to l...
2003 Chevrolet Suburban 1500 LS 5.3L App-Tps VIN: 3GNFK16Z43
Customer called,she made it 30 miles before CEL came on and reduced power message appeared,,,I'll re-post next week when she brings it back..ugh...
2003 Chevrolet S10 2.2L Misfire VIN: 1GCCS14H73
First off thank you for all the replies. I decided to chase the mechanical side of this as I felt I had covered the electrical side. Did a running compression test on cylinder #3 and it went from 120psi to about 30psi in a few seconds. Couldn't do the other cy... Trouble codes: P0303.
2007 Chevrolet Aveo LS 1.6L Engine oil VIN: KL1TD56617
A big thanks to all who responded,this baby is fixed. With so many products on the market and so many choices sometimes it's hard to figure out what to use. The majority of the replies mentioned loc-tite so that is what we went with. The reply that helped the ...
2009 Chevrolet Tahoe LTZ 5.3L cruise control, radio controls, bluetooth VIN: 1GNFC33009
I ordered a new clockspring as the customer asked since we tested and researched and all the replies yall gave by the way thanks but as far as the clockspring goes everything is in working order now and customer is happy so thanks again to all that replied
1992 GMC C6000 Topkick C6H042 6.0L No Start VIN: 1GDJ6H1P2N
This truck is going to the Dealer. I will be informed of the fix once it is done, and I will share it. I appreciate the help everyone offered, but the dealer is offering to help this customer with it, and I am glad. Thanks again
2001 Oldsmobile Intrigue GLS 3.5L idle high VIN: 1G3WX52H71
Thanks for all the help. The throttle was showing 1 percent when closed. An adustment of tps and base idle setting along with a good cleaning fixed it
1997 Pontiac Grand Am GT 3.1L Security (anti theft) VIN: 1G2NW12MXV
First thanks for the help. I got 7 responses on this one, ranging from remote start causing a possible problem (car did not have remote start), putting in a resistor to bypass security, BCM (which does not play a role in this car it is the IPC), and multiple c...
1997 Pontiac Firebird Formula 5.7L Clutch VIN: 2G2FV22P2V
We are going to call it a "fix" since it is 80% better and it's "left the shop for good." The fellow at our local Industrial Brake shop that refaced our flywheel asked to see the clutch disc. He said it was missing the "shim/cushion." We took it to San Anto...
2002 Saturn Vue 3.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 5GZCZ63B72
This bad boy is out the door!!Don't know what was stopping up the injectors, we got a post to check the fuel just in case someone contaminated the fuel. We replaced the fuel filter, cut open the old one and it looked very clean inside. We also took a fuel samp... Trouble codes: P0300 (Muliple cylinder misfires), P0301 (Cyl 1 misfire), P0304 (Cyl 4 misfire), P0305 (Cyl 5 misfire), P0306 (Cyl 6 misfire).
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